Question

A two digit number is such that the digits is 20. if 9 is subtracted from the number, the digits interchange their places. find the number. ​

Answer 1

Step-by-step explanation:

Let the digit be x.

A/Q,

20 = x - 9

x = 29 = 10×2 + 9

After interchanging the digits,

the number is 10×9 + 2

= 92.