Problem: if n is a positive integer and n ^ 2 is divisible by 200 , then what is the largest positive integer that must divide n ?
Rationale: 200 = 2 ^ 3 * 5 ^ 2 if 200 divides n ^ 2 , then n must be divisible by 2 ^ 2 * 5 = 20 the answer is c .
annotated_formula: multiply(sqrt(divide(200, 2)), 2)