Daily Brain Teasers for Wednesday, 30 September 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If 2aaa6 + b0c40 = cca6b6 find number abc. Multiple solutions may exist.
#brainteasers #math
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
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
Dentist
A guy and a girl meet at a bar. They get along so well that they decide to go to the girl's place.
A few drinks later, the guy takes off his shirt and then washes his hands.
He then takes of his trousers and washes his hands again.
The girl has been watching him and says, "You must be a dentist."
The guy, surprised, says "Yes! How did you figure that out?"
"Easy," she replied, "you keep washing your hands."
One thing led to another and they make love.
After they have done, the girl says, "You must be a good dentist."
The guy, now with a boosted ego says, "Sure, I'm a good dentist, How did you figure that out?"
"Didn't feel a thing!"
Find number abc
If a19ab + b1814 = ca746 find number abc. Multiple solutions may exist.
#brainteasers #math
Charles RichterDied 30 Sep 1985 at age 85 (born 26 Apr 1900). Charles Francis Richter was an American seismologist who devised the Richter Scale that measures earthquake magnitudes which he developed with his colleague, Beno Gutenberg, in the early 1930s. The scale assigns numerical ratings to the energy released by earthquakes. Richter used a seismographto record actual earth motion during an earthquake. That isan instrument generally consisting of a constantly unwinding roll of paper, anchored to a fixed place, and a pendulum or magnet suspended with a marking device above the roll. The scale takes into account the instrument's distance from the epicenter. Gutenberg suggested that the scale be logarithmic so, for example, a quake of magnitude 7 would be ten times stronger than a 6.He wrote the article on Earthquakes for the 1974 edition of Encyclopædia Britannica. |
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
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
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
