Daily Brain Teasers for Monday, 30 June 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 4740
NUMBERMANIA: Calculate the number 4740 using numbers [5, 5, 2, 5, 70, 944] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 6c4a6 + 9cb53 = b546c9 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
She Changed Her Name
She wanted to buy personalized license plates but she couldn't afford them.
So she changed her name to JKM345.
Calculate the number 7043
NUMBERMANIA: Calculate the number 7043 using numbers [8, 5, 6, 8, 55, 472] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Leap secondIn 1972, the first leap second day, one second was added to the world's time in order to keep the super-accurate atomic clocks in step with the Earth's rotation. Since the adoption of this system in 1972, firstly due to the initial choice of the value of the second (1/86400 mean solar day of the year 1900) and secondly to the general slowing down of the Earth's rotation, it has been necessary to add over 20 seconds to Coordinated Universal Time (UTC).[Image: part of the master clock system at the U.S. Naval Observatory.] |
MAGIC SQUARE: Calculate A+B*C
The aim is to place the some numbers from the list (12, 13, 16, 17, 18, 20, 21, 26, 56, 57, 60, 83) 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 8b20a - c6bb1 = a04a2 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 1372
NUMBERMANIA: Calculate the number 1372 using numbers [2, 1, 6, 3, 56, 630] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 4c698 - a00b3 = ac64b find number abc. Multiple solutions may exist.
#brainteasers #math
Calculate the number 4721
NUMBERMANIA: Calculate the number 4721 using numbers [9, 7, 6, 5, 96, 697] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
