Daily Brain Teasers for Sunday, 04 July 2021
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If c87a2 + ac9ba = 6b6a6 find number abc. Multiple solutions may exist. 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. Calculate the number 6787
NUMBERMANIA: Calculate the number 6787 using numbers [3, 6, 2, 6, 74, 705] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
Any little ones yet?
Mrs. O'Donovan was walking down O'Connell Street in Dublin, and coming in the opposite direction was Father O'Rafferty.
"Hello," said the Father, "And how is Mrs. O'Donovan, didn't I marry you two years ago?"
"You did that, Father."
"And are there any little ones yet?"
"No, not yet, Father." Said she.
"Well now, I'm going to Rome next week, and I'll light a candle for you."
"Thank-you, Father." And away she went.
A few years later they met again.
"Well now, Mrs. O'Donovan," said the Father, "how are you?"
"Oh, very well," said she.
"And tell me," he said, "have you any little ones yet?"
"Oh yes, Father. I've had three sets of twins, and four singles - ten in all."
"Now isn't that wonderful," he said "And how is your lovely husband?"
"Oh," she said, "he's over in Rome to blow that bloody \\candle out!"
MAGIC SQUARE: Calculate A-B+C
The aim is to place the some numbers from the list (7, 8, 15, 19, 20, 25, 26, 27, 33, 81) 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. Henrietta Swan LeavittBorn 4 Jul 1868; died 12 Dec 1921 at age 53.American astronomer who wasknownfor her discovery of the relationship between period and luminosity in Cepheid variables, pulsating stars that vary regularly in brightness in periods ranging from a few days to several months. Leavitt's greatest discovery came from her study of 1777 variable stars in the Magellanic Clouds. She determined the periods of 25 Cepheid variables and in 1912 announced what has since become known as the famous Period-Luminosity relation: “since the variables are probably nearly the same distance from the earth, their periods are apparently associated with their actual emission of light, as determined by their mass, density, and surface brightness.”Today the Period-Luminosity relation is used to calculate the distances of galaxies. |
Find number abc
If a31cc + 67612 = 1b0a11 find number abc. Multiple solutions may exist. 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. Calculate the number 5805
NUMBERMANIA: Calculate the number 5805 using numbers [9, 3, 2, 3, 75, 961] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
If 88c39 - b5bb6 = 7a9a3 find number abc. Multiple solutions may exist. Which is a winning combination of digits?
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. Calculate the number 666
NUMBERMANIA: Calculate the number 666 using numbers [9, 1, 5, 3, 89, 497] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.