Question

two digit number is such that the product of its digit is 6 when 9is add it to the number the digits interchange their places find the number​

Answer 1

By trial & error method

The possible pair of factors of 6 are :

a) 1 and 6

Verification : 16 + 9 ≠ 61

b) 2 and 3

Verification : 23 + 9 = 32