What is the value of 7! (7 factorial)?

A. 5040
Posted in:  Numbers -  Arithmetic -  Mathematics

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

B. 60
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If x is a positive integer such that 3x + 5 = 26, what is the value of x?

A. 7
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What is the sum of the first 10 prime numbers?

A. 129
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Which of the following numbers is a perfect square?

B. 64
Posted in:  Numbers -  Arithmetic -  Mathematics