Question
One-fourth of the sum of prime numbers, greater than 4 but less than 16, is the square of = ?
Answer: Option A Sum of prime numbers greater than 4 but less than 16
$$\eqalign{
& = \left( {5 + 7 + 11 + 13} \right) \cr
& = 36 \cr
& \therefore \frac{1}{4} \times 36 \cr
& = 9 \cr
& = {3^2} \cr} $$
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