IBPS RRBs Officer Scale II and III Sep 2013 Paper

If it is possible to form a number with the first, the fourthand 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 ? If 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.