Daily Brain Teasers for Monday, 28 September 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 2822
NUMBERMANIA: Calculate the number 2822 using numbers [6, 6, 6, 4, 92, 385] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If a19ab + b1814 = ca746 find number abc. Multiple solutions may exist.
#brainteasers #math
Calculate the number 1632
NUMBERMANIA: Calculate the number 1632 using numbers [4, 1, 7, 1, 76, 382] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
True or false?
A little kid's in school, taking a true-false test and he's flipping a coin. At the end of the test he's flipping the coin again. The teacher says, "What are you doing?" He says, "Checking my answers."
MAGIC SQUARE: Calculate A*B-C
The aim is to place the some numbers from the list (16, 17, 25, 30, 31, 39, 40, 53, 54, 62, 84) 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.
#brainteasers #math #magicsquare
Willem EinthovenDied 28 Sep 1927 at age 67 (born 21 May 1860).Dutch physiologist who introduced a new era in the diagnosis and treatment of diseases of the heart with his invention of the electrocardiograph, for which he was awarded the 1924 Nobel Prize for Physiology or Medicine. This device became an essential clinical instrument for displaying the electrical properties of the heart, and especially useful in the diagnosis of heart disease.«[DSB gives day of death as 28 Sep 1927. EB gives 29 Sep 1927.] |
Find number abc
If b45a0 + cb7bb = 8ca8b find number abc. Multiple solutions may exist.
#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.
#brainteasers #mastermind
Calculate the number 2204
NUMBERMANIA: Calculate the number 2204 using numbers [1, 3, 5, 8, 92, 335] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If c02b0 + 555ac = b5a4c find number abc. Multiple solutions may exist.
#brainteasers #math
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.
#brainteasers #mastermind
Calculate the number 4343
NUMBERMANIA: Calculate the number 4343 using numbers [4, 9, 4, 4, 52, 535] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
