BRAIN TEASERS
Math (page 77)

Math (page 77)

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 761 to 770.
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Find number abc

If 7c8b7 - b0b57 = acaa0 find number abc. Multiple solutions may exist.
Correct answers: 6
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Calculate the number 1932

NUMBERMANIA: Calculate the number 1932 using numbers [8, 4, 2, 4, 36, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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Find number abc

If 762ba - 61206 = 1502c find number abc. Multiple solutions may exist.
Correct answers: 1
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A Letter Addressed to God

A letter written in a childish scrawl came to the post office addressed to "God". A postal employee, not knowing exactly what to do with the letter, opened it and read: "Dear God, my name is Jimmy. I am 6 years old. My father is dead and my Mom is having a hard time raising me and my sister. Would you please send us $500?" The postal employee was touched. He showed the letter to his fellow workers and all decided to kick in a few dollars each and send it to the family. They were able to raise $300.A couple of weeks later the same post office received a second letter addressed to God. The boy thanked God for the recent infusion of cash, but ended with this request: "Next time would you send the money directly to us? If you send it through the post office they deduct $200."
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Calculate the number 7465

NUMBERMANIA: Calculate the number 7465 using numbers [3, 5, 8, 5, 93, 440] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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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, 20, 24, 38, 39, 49, 80, 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: 1
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Find number abc

If 49aba + 24082 = bc25c find number abc. Multiple solutions may exist.
Correct answers: 2
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Calculate the number 6256

NUMBERMANIA: Calculate the number 6256 using numbers [2, 5, 6, 8, 41, 896] 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 ab2c9 - 69abb = 1b365 find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Calculate the number 387

NUMBERMANIA: Calculate the number 387 using numbers [6, 2, 7, 9, 33, 317] 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 (1, 3, 4, 13, 15, 16, 69, 71, 72, 83) 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: 1
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#brainteasers #math #magicsquare
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Gunpowder mill

In 1639, the first record of the establishment of a gunpowder mill in the American colonies was an order from the General Court of Massachusetts granting 500 acres of land at Pecoit, Mass. Edward Rawson received the grant, “so as he goes on with the powder if the saltpeter comes.” Since Jamestown was settled (1607) and the Pilgrims landed at Plymouth (1620), firearms and gunpowder were brought from England—an uncertain supply. When the colonialists turned to producing gunpowder for themselves, the General Court encouraged homespun production efforts, especially for the saltpeter ingredient. The first gunpowder mill of importance was established in 1675 at Milton, Mass., on the Neponset River.«
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