89. Sum of the digits of a two-digit number is 11. The given number is less than the number obtained by interchanging the digits by 9. Find the number. 89. Sum of the digits of a two-digit number is 11. The given number is less than the number obtained by interchanging the digits by 9. Find the number. July 16, 2021 Category: Chapter 2 - Linear Equations in One Variable , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related