BRAIN TEASERS
Math (page 24)

Math (page 24)

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 231 to 240.
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Calculate the number 4278

NUMBERMANIA: Calculate the number 4278 using numbers [1, 2, 4, 9, 70, 730] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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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 (7, 8, 17, 19, 26, 27, 36, 50, 65, 66, 75, 91) 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
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#brainteasers #math #magicsquare
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Find number abc

If c6c8c + 9063a = a37aab find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math

The Good, the Bad and the U...

The Good, the Bad and the Ugly
Good: Your hubby and you agree, no more kids.
Bad: You can't find your birth control pills.
Ugly: Your daughter borrowed them.
Good: Your son studies a lot in his room.
Bad: You find several porn movies hidden there.
Ugly: You're in them.
Good: Your husband understands fashion.
Bad: He's a cross-dresser.
Ugly: He looks better than you.
Good: Your son's finally maturing.
Bad: He's involved with the woman next door.
Ugly: So are you.
Good: You give the birds and bees talk to your daughter.
Bad: She keeps interrupting.
Ugly: With corrections.
Good: Your wife's not talking to you.
Bad: She wants a divorce.
Ugly: She's a lawyer.
Good: The postman's early.
Bad: He's wearing fatigues and carrying an AK47.
Ugly: You gave him nothing for Christmas.
Good: Your daughter got a new job.
Bad: As a hooker.
Ugly: Your co-workers are her best clients.
Way ugly: She makes more money than you do.
Good: Your son is dating someone new.
Bad: It's another man.
Ugly: He's you're best friend.
Good: Your wife is pregnant.
Bad: It's triplets.
Ugly: You had a vasectomy five years ago.
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Calculate the number 473

NUMBERMANIA: Calculate the number 473 using numbers [2, 3, 1, 1, 10, 326] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If 98242 - 9bacc = 18b5 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 7453

NUMBERMANIA: Calculate the number 7453 using numbers [1, 9, 9, 1, 22, 744] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (9, 10, 13, 14, 18, 22, 50, 51, 52, 60, 63) 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
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If ab07c - c34cb = 4a6a2 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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Calculate the number 1958

NUMBERMANIA: Calculate the number 1958 using numbers [7, 4, 2, 5, 59, 512] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 9b0a5 - 1bc0a = 79259 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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Vacuum cleaner

In 1869, Ives W. McGaffney of Chicago obtained the first American patent for a "sweeping machine" (U.S. No. 91,145). This first suction-type vacuum cleaner was a light hand-powered device for surface cleaning. The mechanism consists of a handle to turn a pulley which uses a belt to drive a fan in a casing, thus producing a strong current of air, "controlled to take up dust and dirt, and carry the fine particles into a porous air-chamber, so constructed as to allow the air to escape while the dust is retained." The air-chamber could be "a bag made of fine and firm cotton, with an elastic band or cord fixed in a hem around its mouth, which is drawn closely over the discharge-opening of the fan." Its top end is suspended on a cross-bar on the handle.
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