Question

If the square of a number ends with 17 zeros, then its square will end with how many zeros?

• A. 34
• B. 17
• C. 51
• D. indeterminate

Answer 1

The correct option is A

34

We know that if a number has 'n' zeros at the end, its sqaure will have '2n' zeros

Let the given square of a number be 'x'
$\Rightarrow \text{Number of zeros x has = 17}$
$\therefore \text{Number of zeros}{x}^2\text{has}=2\times 17=34$