Daily Brain Teasers for Friday, 22 May 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 1314
NUMBERMANIA: Calculate the number 1314 using numbers [9, 8, 4, 9, 68, 829] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
MAGIC SQUARE: Calculate A+B+C
The aim is to place the some numbers from the list (14, 15, 16, 23, 24, 25, 30, 57, 58, 69, 70, 71) 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
Find number abc
If 8cb4a + 9cab3 = 1ac9ac find number abc. Multiple solutions may exist.
#brainteasers #math
Sermon made him pay income tax
After hearing a sermon about lies and deceit, a man wrote the IRS: "I have been unable to sleep, knowing that I have cheated on my income tax. I have reviewed my taxable income and have enclosed a check for $900.
If I still can't sleep, I will send the rest."
If I still can't sleep, I will send the rest."
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.
#brainteasers #mastermind
Skyscraper patentIn 1888, Architect Leroy S. Buffington patented the system for building skyscrapers using a metal skeleton frame. Although Buffington claimed to be the originator of the metal skeleton frame that made building tall structures feasible, his claim to be the inventor of the skyscraper was refuted. However, using the designs created by Harvey Ellis, Buffington is credited with playing a pivotal role in refining the new method of construction. The invention of the skyscraper lies with George A. Fuller (1851-1900), who worked on solving the problems of the load bearing capacities of tall buildings. |
Calculate the number 8179
NUMBERMANIA: Calculate the number 8179 using numbers [3, 6, 3, 7, 85, 843] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If abb7a + ca741 = 1a431c 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 2222
NUMBERMANIA: Calculate the number 2222 using numbers [1, 2, 4, 9, 70, 532] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
MAGIC SQUARE: Calculate A-B+C
The aim is to place the some numbers from the list (8, 12, 13, 28, 32, 33, 38, 42, 43, 52, 61) 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
Find number abc
If 4baab + 537bc = 1030a7 find number abc. Multiple solutions may exist.
#brainteasers #math
