Daily Brain Teasers for Thursday, 17 September 2026
|
puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
MAGIC SQUARE: Calculate A*B+C
The aim is to place the some numbers from the list (9, 10, 14, 15, 16, 21, 29, 62, 63, 69, 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.
#brainteasers #math #magicsquare
Find number abc
If 89bc0 - ca10b = bba2b 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
Not older...just better....
For his wife's birthday, a doctor ordered a cake with this inscription:
"You are not getting older, You are getting better."
When asked how he wanted it arranged, he said, "Just put 'You are not getting older' at the top, and 'You are just getting better' at the bottom."
It wasn't until the good doctor was ready to serve the cake that he discovered it read:
"YOU ARE NOT GETTING OLDER AT THE TOP, YOU ARE JUST GETTING BETTER AT THE BOTTOM."
Calculate the number 670
NUMBERMANIA: Calculate the number 670 using numbers [3, 2, 3, 3, 55, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Mont Cenis Tunnel openedIn 1871, the Mont Cenis Tunnel opened, the world's first important mountain tunnel. The two track railway tunnel through the Alps under Mont Cenis, united Savoy (north of the mountains) through Switzerland with the rest of Italy to the south. It was 8 miles long, double any previous tunnel's length. Work began in 1857. In 1861, after three years of tedious hand-boring eight inches a day into the Alpine rock face, its builder, French engineer Germain Sommeiller, introduced industrial-scale pneumatics in tunnel digging for the first time. Workers tunnelling from each side met halfway on 26 Dec 1870. The tunnel was inaugurated with the passage of 22 carriages in 20 minutes. Regular train service began 16 Oct 1871. Mail was sent by the tunnel beginning 5 Jan 1872, saving 24 hours from the overland route.*«[Image top: Mont Cenis Tunnel entrance arch; bottom: Sommeiller Boring Machines.] |
Find number abc
If 8b3ba - aca1b = 106c2 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 806
NUMBERMANIA: Calculate the number 806 using numbers [3, 3, 2, 9, 81, 720] 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 (2, 4, 7, 8, 9, 13, 21, 23, 27, 59, 79, 95) 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 aa428 + 42a1b = c5ca8 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
