The number of five digit numbers that are same when the order of the digits is reversed (e.g "34543" ),is

The number of five - digit numbers having the product of digits 20 is

The number of two-digit numbers yield a perfect s suare when added to a number but in the reverse order is

How many two digit prime numbers are there between 10 to 100 which remains prime numbers when the order of their digits is reversed?

Find the number of five digit numbers that can be formed using the digits 1,2,3,4,5,6,7.8,9 in which one digit appears once and two digits appear twice (e.g.41174 is one such number but 75355 is not.

The sum of a two-digit number and the number obtained by reversing the order of its digits is 165. If the digits differ by 3, find the number.

The sum of a two digit number and the number obtained by reversing the order of its digits is 99. If the digits differ by 3, find the number.

The sum of a two-digit number and the number formed by reversing the order of digits is 66. If the two digits differ by 2, find the number.How many such numbers are there?