BRAIN TEASERS # Daily Brain Teasers

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... Daily Brain Teasers for Monday, 20 January 2020
● NUMBERMANIA: Calculate the number 1015 using numbers [2, 1, 8, 9, 84, 933] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If 72315 + 131c1 = c5b9a find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 511 using numbers [4, 1, 3, 7, 78, 597] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (10, 12, 13, 15, 16, 21, 24, 50, 51, 59, 78) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. ● If cbca3 - a7373 = 38ab0 find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. Daily Brain Teasers for Sunday, 19 January 2020
● If 72315 + 131c1 = c5b9a find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 511 using numbers [4, 1, 3, 7, 78, 597] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (10, 12, 13, 15, 16, 21, 24, 50, 51, 59, 78) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. ● If cbca3 - a7373 = 38ab0 find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Daily Brain Teasers for Saturday, 18 January 2020
● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 511 using numbers [4, 1, 3, 7, 78, 597] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (10, 12, 13, 15, 16, 21, 24, 50, 51, 59, 78) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. ● If cbca3 - a7373 = 38ab0 find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ### The Card Game

Two couples were playing cards. Jeff accidentally dropped some cards on the floor. When he bent down under the table to pick them up, he noticed that Dave's wife, Sandy, was not wearing any underwear! Shocked by this, Jeff hit his head on the table and emerged red-faced. Later when Jeff went to the kitchen to get some refreshments Sandy followed him and asked, "Did you see anything under the table that you liked?"

Jeff admitted, "Well, yes I did."

She said "you can have it, but it will cost you \$100."

After a minute or two, Jeff indicates that he is interested. She tells him that since Dave works Friday afternoons and Jeff doesn't, that Jeff should come to their house around 2:00 PM on Friday. Friday came and Jeff went to her house at 2:00 PM. After paying her the \$100, they went to the bedroom, had sex for a few hours and then Jeff left. Dave came home about 6:00 PM and asked his wife, "Did Jeff come by this afternoon?"

Totally shocked, Sandy replied, "Yes, he did stop by for a few minutes."

Next Dave asked, "Did Jeff give you \$100?"

Sandy thought, 'Oh hell, he knows!' Reluctantly she said, "Yes, he did give me \$100."

"Good," Dave says.

"Jeff came by the office this morning and borrowed the \$100 from me and said that he'd stop by our house on his way home and pay me back. It's so good to have a friend you can trust."

Jokes of the day - Daily updated jokes. New jokes every day. Daily Brain Teasers for Friday, 17 January 2020
● NUMBERMANIA: Calculate the number 511 using numbers [4, 1, 3, 7, 78, 597] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (10, 12, 13, 15, 16, 21, 24, 50, 51, 59, 78) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. ● If cbca3 - a7373 = 38ab0 find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. Daily Brain Teasers for Thursday, 16 January 2020
● The aim is to place the some numbers from the list (10, 12, 13, 15, 16, 21, 24, 50, 51, 59, 78) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. ● If cbca3 - a7373 = 38ab0 find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. ● NUMBERMANIA: Calculate the number 2008 using numbers [1, 5, 2, 5, 24, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Daily Brain Teasers for Wednesday, 15 January 2020
● If cbca3 - a7373 = 38ab0 find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. ● NUMBERMANIA: Calculate the number 2008 using numbers [1, 5, 2, 5, 24, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If bbbcc - 6c7aa = 3ba8b find number abc. Multiple solutions may exist. Daily Brain Teasers for Tuesday, 14 January 2020
● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. ● NUMBERMANIA: Calculate the number 2008 using numbers [1, 5, 2, 5, 24, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If bbbcc - 6c7aa = 3ba8b find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. Daily Brain Teasers for Monday, 13 January 2020
● NUMBERMANIA: Calculate the number 973 using numbers [7, 6, 8, 2, 89, 183] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. ● NUMBERMANIA: Calculate the number 2008 using numbers [1, 5, 2, 5, 24, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If bbbcc - 6c7aa = 3ba8b find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 7730 using numbers [2, 8, 7, 5, 24, 971] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Daily Brain Teasers for Sunday, 12 January 2020
● If abc3c - aab60 = a87c find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. ● NUMBERMANIA: Calculate the number 2008 using numbers [1, 5, 2, 5, 24, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If bbbcc - 6c7aa = 3ba8b find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 7730 using numbers [2, 8, 7, 5, 24, 971] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (1, 2, 3, 7, 8, 9, 24, 25, 26, 66, 67) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. Daily Brain Teasers for Saturday, 11 January 2020
● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (25, 26, 29, 30, 34, 38, 65, 66, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C. ● If 82ab0 - 10bb8 = c1b92 find number abc. Multiple solutions may exist. ● NUMBERMANIA: Calculate the number 2008 using numbers [1, 5, 2, 5, 24, 315] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● If bbbcc - 6c7aa = 3ba8b find number abc. Multiple solutions may exist. ● The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. ● NUMBERMANIA: Calculate the number 7730 using numbers [2, 8, 7, 5, 24, 971] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. ● The aim is to place the some numbers from the list (1, 2, 3, 7, 8, 9, 24, 25, 26, 66, 67) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C. ● If 3cca3 + bbb8b = 822bc find number abc. Multiple solutions may exist.
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### Joseph Paxson Iddings

Born 21 Jan 1857; died 8 Sep 1920 at age 63.American geologist who advanced understanding in the field of petrology - the study of the origin, composition, structure, and alteration of rocks. Around 1880, he was one of the first in the U.S. to study thin rock sections with a microscope. He explored and mapped the geology of Yellowstone National Park during seven field seasons (1883-1890). From this study he introduced original ideas concerning the range of crystal line textures and mineral composition of granular igneous rocks. He proposed that physical and chemical conditions causing differences in the formationof neighbouring igneous rock from the same igneous magma. Further, he rejected the prevailing view that granular rocks were only formed in large masses at depth.«
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