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If x is a positive integer such that 3x + 7 = 28, what is the value of x?

A. 5
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What is the product of 12 and 8?

A. 96
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What is the least common multiple (LCM) of 12 and 15?

B. 60
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If x = 3 and y = 4, what is the value of x^2 + y^2?

A. 25
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What is the sum of the first 10 positive integers?

C. 55
Posted in:  Numbers -  Arithmetic -  Mathematics