Daily Brain Teasers for Sunday, 27 June 2021
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
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. 
Knowing Your Spouse
One of the funniest memories I have of the trials and tribulations of making the journey from childhood to adulthood was our annual summer vacation trek from Chicago to a cabin usually someplace on a lake in Wisconsin or Michigan.
Every year, it seems, we would get on a highway a few miles out of the city, and mom would wail, “Oh my goodness! I think left the iron on.” And almost every year we would turn around and go back. But as I recall, not once was it was ever plugged in. She often had the same fear that all our earthly possessions would disappear in a fire caused by her forgetfulness.
When I was about 14 years old, we were headed out of Chicago for Lake Geneva, Wisconsin and, sure enough, Mom gasped, “I just know I left the iron on.”
My father didn't say a word, just pulled over onto the shoulder of the road, got out, opened the trunk and handed her the iron.
MAGIC SQUARE: Calculate A-B*C
The aim is to place the some numbers from the list (3, 4, 5, 18, 19, 20, 23, 30, 31, 32, 70, 75) 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. Merle Antony TuveBorn 27 Jun 1901; died 20 May 1982 at age 80.American research physicist and geophysicist who (with Gregory Breit) made the first use pulsed radio waves to explore the ionosphere. He devised the necessary detecting equipment to measure the time between receiving a direct radio pulse and a second pulse reflected from the ionosphere. The observations he made provided the theoretical foundation for the development of radar. Tuve, with Lawrence R. Hafstad and Norman P. Heydenburg, made the first and definitive measurements of the nuclear force between proton-proton force at nuclear distances. During WW II he developed the proximity fuse. Following the war, he made important contributions to experimental seismology, radio astronomy, and optical astronomy.« |
Find number abc
If 4cba5 + cb215 = ac29b 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 7055
NUMBERMANIA: Calculate the number 7055 using numbers [7, 3, 5, 5, 72, 670] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
If ab8bc + baab4 = 1aa1b1 find number abc. Multiple solutions may exist. 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. 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.