If it is possible to form a number with the first, the fourth and the seventh digits of the number 4671358, which is the perfect square of a two-digit odd number, which of the following will be the digit in the tenth place of that two digit odd number ? lf no such number can be formed, give 'O' as the answer and if more than one such number can be made, give 'X' as the answer

Options

A. 2
B. 9
C. 3
D. O

Answer

a

Explanation

`841 = (29)^2`
Digit at tenth place =2