a, b and c are positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could be the value of c? Indicate all such values.
A.21
B.30
C.45
D.72
E.100
F.331
我的答案：
a, b and c are positive integers. If b equals the square root of a, and if c equals the sum of a and b, which of the following could be the value of c?
