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

A. 30
Posted in:  Numbers -  Arithmetic -  Mathematics

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

A. 25
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What is the result of 7! (7 factorial)?

A. 5040
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Which of the following numbers is a prime number?

B. 29
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What is the sum of the first 10 positive integers?

B. 55
Posted in:  Numbers -  Arithmetic -  Mathematics