Last updated at Feb. 20, 2019 by Teachoo

Transcript

Example 4 Check the divisibility of 21436587 byDivisibility by 9 If sum of digits is divisible by 9 Then, number is divisible by 9 9. Sum of digits = 2 + 1 + 4 + 3 + 6 + 5 + 8 + 7 = 36 Since 36 is divisible by 9, ∴ 21436587 is also divisible by 9.

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.