exam Maths Puzzle Numerical Ability

A "simple square" is any integer greater than 1 that has only three positive integer factors -- itself, its square root, and 1. Which of the following is a simple square?

(A) 12

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exam Other Question

Find each value if f(x)=7x+2 and g(x)=4x-x/2.

1. f(-7) 2. g(8) 3. f(8/14) 4. g(-6n)

Please help me find the answers. I dont understand. find the arithmetic mean between 2.5 and 9.5 HOW IN THE WORLD DO YOU DO THAT?????