Integers are listed from 700 to 1000. In how many integers is the sum of the digits 10?

Integers are listed from 700 to 1000. In how many integers is the sum of the digits 10?
  1. 6
  2. 7
  3. 8
  4. 9

Solution

We need integers between 700 and 1000 whose digit sum is 10. They are 703, 712, 721, 730, 802, 811, 820, 901 and 910 - that is 9 such integers.

Asked in: CSAT 2021

Practice more Basic Numeracy questions on Aicharya