Daily Brain Teasers for Sunday, 20 June 2021
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If ab8bc + baab4 = 1aa1b1 find number abc. Multiple solutions may exist. The first user who solved this task is Nasrin 24 T.
#brainteasers #math
Find the right combination
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. The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
Calculate the number 3282
NUMBERMANIA: Calculate the number 3282 using numbers [9, 9, 9, 3, 28, 155] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
The good news
A man goes into the hospital for some tests. The medical staff knocks him out, and when he comes around there is a doctor peering over him, pulling up his eyelid and wielding the reflex hammer.
The doctor says: "Ah, I'm glad you're awake. I'm afraid I have some good news and some bad news."
The man says: "Don't hold back, Doc, tell me the bad news."
The doctor says "Your condition was worse than we thought and we had to amputate both of your legs."
The man asks: "What is the good news, then?"
The doctor replies: "The man in the next bed wants to buy your slippers."
MAGIC SQUARE: Calculate A+B*C
The aim is to place the some numbers from the list (6, 7, 10, 22, 23, 26, 45, 64, 65, 68) 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 first user who solved this task is Nasrin 24 T.
#brainteasers #math #magicsquare
Jack KilbyDied 20 Jun 2005 at age 81 (born 8 Nov 1923).Jack St Clair Kilby was an American electrical engineer who invented the first integrated ciruit (IC), for which he shared the 2000 Nobel Prize in Physics. His interest in electronics grew out of his in school-age hobby of amateur radio. Year later, working at Texas Instruments, he devised a way to miniaturize a complicated transistor circuit by building its components on a block of silicon with internal connections that eliminated external wiring. On 12 Sep 1958, he demonstrated his first integrated circuit to his supervisor. A few months later, an IC device in an improved form was independently invented elsewhere by Robert Noyce. Geoffrey W.A. Dummer also had the concept years earlier, but not a working device. In Sep 1965, Kilby's team developed the first shirt-pocket electronic calculator using IC's.« |
Find number abc
If b12a1 - 76c46 = 14b0a find number abc. Multiple solutions may exist. The first user who solved this task is Nasrin 24 T.
#brainteasers #math
Find the right combination
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. The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
Calculate the number 1319
NUMBERMANIA: Calculate the number 1319 using numbers [5, 1, 4, 2, 51, 532] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
Find number abc
If a8cba - 6c49b = b3026 find number abc. Multiple solutions may exist. The first user who solved this task is Nasrin 24 T.
#brainteasers #math
What a winning combination?
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. The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
Calculate the number 8173
NUMBERMANIA: Calculate the number 8173 using numbers [8, 5, 7, 4, 30, 620] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
