Question

If √x is an odd integer, which of the following

MUST be even?
(A) x
(B) 3√x
(C) √2x
(D) 2√x
(E) x^

Answer 1

`2√(x)`

Explanation:

If
`√(x)` is odd number then by definition
`2√(x)` must be even number. correct option is option D.