BRAIN TEASERS
Math (page 102)

Math (page 102)

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 1011 to 1020.
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (2, 8, 9, 10, 15, 16, 17, 23, 24, 25, 57, 61) 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
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Find number abc

If babcb - 5990b = a7c0 find number abc. Multiple solutions may exist.
Correct answers: 11
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#brainteasers #math
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Calculate the number 4939

NUMBERMANIA: Calculate the number 4939 using numbers [7, 2, 7, 4, 90, 460] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania

Pregnant Wife

Wife: "I'm pregnant...."
Dad: "Hi pregnant, I’m dad!"
Wife: "No, no you’re not."

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Find number abc

If b8719 + 713ab = 1c00c5 find number abc. Multiple solutions may exist.
Correct answers: 5
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#brainteasers #math
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Calculate the number 6709

NUMBERMANIA: Calculate the number 6709 using numbers [1, 6, 3, 2, 31, 950] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
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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 (16, 19, 20, 24, 27, 28, 64, 67, 68, 87, 93) 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
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Find number abc

If a2b5c - 60081 = 128a3 find number abc. Multiple solutions may exist.
Correct answers: 5
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#brainteasers #math
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Calculate the number 364

NUMBERMANIA: Calculate the number 364 using numbers [2, 9, 5, 4, 89, 145] 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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Find number abc

If 70a49 - 4a0c3 = bba36 find number abc. Multiple solutions may exist.
Correct answers: 5
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#brainteasers #math
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Calculate the number 542

NUMBERMANIA: Calculate the number 542 using numbers [3, 9, 9, 6, 94, 390] 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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Enrico Betti

Died 11 Aug 1892 at age 68 (born 21 Oct 1823).Italian mathematician who is noted for his contributions to algebra and topology. His early work is in the area of equations and algebra. He wrote the first rigorous exposition of the theory of equations, previously given without proofs, developed by the noted French mathematician Évariste Galois (1811-32). Betti extended and gave proofs relating to the algebraic concepts of Galois, published in several works from 1851. Betti thus made an important contribution to the transition from classical to modern algebra. He was the first to give a proof that the Galois group is closed under multiplication. Betti also wrote a pioneering memoir on topology, the study of surfaces and space. Betti did important work in theoretical physics, in particular in potential theory and elasticity.
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