BRAIN TEASERS
Math (page 117)

Math (page 117)

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 1161 to 1170.
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Find number abc

If 8b6c9 - c5348 = 533a find number abc. Multiple solutions may exist.
Correct answers: 9
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Calculate the number 7790

NUMBERMANIA: Calculate the number 7790 using numbers [7, 9, 9, 4, 81, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (6, 8, 9, 10, 12, 13, 16, 18, 19, 70, 87) 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: 2
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#brainteasers #math #magicsquare

Who Should Make the Coffee?

A man and his wife were having an argument about who should brew the coffee each morning. The wife said, "You should do it, because you get up first, and then we don't have to wait as long to get our coffee."The husband said, "You are in charge of the cooking around here so you should do it, because that is your job, and I can just wait for my coffee."Wife replies, "No, you should do it, and besides it says in the Bible that the man should do the coffee."Husband replies, "I can't believe that! Show me."So she fetched the Bible, and opened the New Testament and showed him at the top of several pages, that it indeed says, "HEBREWS."
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Find number abc

If ac202 - caa0a = bc2ab find number abc. Multiple solutions may exist.
Correct answers: 8
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#brainteasers #math
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Calculate the number 1164

NUMBERMANIA: Calculate the number 1164 using numbers [8, 1, 1, 5, 47, 984] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
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#brainteasers #math #numbermania
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Find number abc

If 8a9a3 - a8389 = cbc3b find number abc. Multiple solutions may exist.
Correct answers: 10
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#brainteasers #math
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Calculate the number 2206

NUMBERMANIA: Calculate the number 2206 using numbers [7, 2, 9, 8, 20, 128] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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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, 9, 11, 12, 17, 21, 22, 23, 24, 27, 29, 67) 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: 3
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#brainteasers #math #magicsquare
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Find number abc

If 99cb5 + a5ca9 = caa32a find number abc. Multiple solutions may exist.
Correct answers: 7
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#brainteasers #math
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Calculate the number 6339

NUMBERMANIA: Calculate the number 6339 using numbers [9, 7, 3, 7, 27, 919] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Pull chain bulb socket

In 1896, the first U.S. patent for an electric light bulb socket featuring an on-and-off pull chain was issued to Harvey Hubbell of Bridgeport, Connecticut (No. 565,541). On 8 Nov 1904, he patented a separable electric plug (No. 774250) adapting an Edison screw socket to a flat prong style. His inventions are now familiar throughout North America. His manufacturing company, Harvey Hubbell Inc. still exists today.
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