If x is a positive integer such that 3x + 7 = 40, what is the value of x?

B. 11
Posted in:  Numbers -  Arithmetic -  Mathematics

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

A. 5040
Posted in:  Numbers -  Arithmetic -  Mathematics