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Monthly Archive - December 2025 (page 2)brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20. |
Find number abc
If 76a67 - b5a62 = c1aa5 find number abc. Multiple solutions may exist. Correct answers: 0
#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. Correct answers: 0
#brainteasers #mastermind
Calculate the number 5172
NUMBERMANIA: Calculate the number 5172 using numbers [1, 6, 4, 2, 45, 816] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania

Knock Knock Collection 026
Knock Knock
Who's there?
Bitter Bianca!
Bitter Bianca who?
Bitter Bianca next train out of here, pardner!
Knock Knock
Who's there?
Bjorn!
Bjorn who?
Bjorn Free!
Knock Knock
Who's there?
Bo!
Bo who?
Bo Geste!
Knock Knock
Who's there?
Bolivia!
Boliva who?
Boliva me, I know what I'm talking about!
Knock Knock
Who's there?
Bologna!
Bologna who?
Bologna & cheese!
Who's there?
Bitter Bianca!
Bitter Bianca who?
Bitter Bianca next train out of here, pardner!
Knock Knock
Who's there?
Bjorn!
Bjorn who?
Bjorn Free!
Knock Knock
Who's there?
Bo!
Bo who?
Bo Geste!
Knock Knock
Who's there?
Bolivia!
Boliva who?
Boliva me, I know what I'm talking about!
Knock Knock
Who's there?
Bologna!
Bologna who?
Bologna & cheese!
MAGIC SQUARE: Calculate A-B-C
The aim is to place the some numbers from the list (5, 6, 8, 20, 21, 23, 24, 65, 66, 68, 97) 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. Correct answers: 0
#brainteasers #math #magicsquare
Find number abc
If 1bcca + 4bba5 = cb587 find number abc. Multiple solutions may exist. Correct answers: 1
#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. Correct answers: 1
#brainteasers #mastermind
Calculate the number 3828
NUMBERMANIA: Calculate the number 3828 using numbers [3, 1, 3, 8, 90, 336] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
If 4c7b7 - c7ca2 = b4b5 find number abc. Multiple solutions may exist. Correct answers: 1
#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. Correct answers: 1
#brainteasers #mastermind
Calculate the number 3992
NUMBERMANIA: Calculate the number 3992 using numbers [5, 4, 5, 5, 85, 898] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania