BRAIN TEASERS
Math (page 254)

Math (page 254)

These are fun math riddles. All of these tricky riddles are based on real math concepts and can be solved with purely math and logic. These are the tasks listed 2531 to 2540.
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Find number abc

If 7a06b + b91c9 = 1c1a04 find number abc. Multiple solutions may exist.
Correct answers: 63
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate 5+8

If 1+4=5, 2+5=12 and 3+6=21 then 5+8=?
Correct answers: 10880
The first user who solved this task is Thinh Ddh.
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#brainteasers #math #riddles
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 114
The first user who solved this task is H Tav.
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#brainteasers #math #riddles

WORST HALLOWEEN DECORATIONS...

WORST HALLOWEEN DECORATIONS FOR A RETIREMENT HOME EVER
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Calculate the number 1590

NUMBERMANIA: Calculate the number 1590 using numbers [4, 4, 5, 5, 22, 341] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 32
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Find number abc

If ba8c0 - a0bb8 = aac3b find number abc. Multiple solutions may exist.
Correct answers: 47
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 823

NUMBERMANIA: Calculate the number 823 using numbers [3, 3, 6, 8, 48, 421] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (4, 8, 10, 14, 15, 21, 30, 34, 41, 52, 89) 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: 25
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #magicsquare
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 83
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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What is the 4 digit number i...

What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3?
Correct answers: 72
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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Find number abc

If 86b7a - 25a26 = 6a2c5 find number abc. Multiple solutions may exist.
Correct answers: 49
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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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.
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Dental chair patent

In 1848, the first U.S. patent for a surgical or dental operating-chair with adjustable elevation and tilt of the seat and back was issued to M.W. Hanchett of Syracuse, N.Y. (No. 5711). The chair included a footrest with adjustable elevation.[Image: top - full view of seat and foot rest; bottom - detail of tilt cogs beneath seat.]
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