Question

Test the divisibility of the following numbers by 9
a) 9725
b)65458

Answer 1

Answer:

Step-by-step explanation:

The divisibility rule of 9 states that if the sum of digits of any number is divisible by 9, then the number is also divisible by 9.

so in a) 9725

9+7+2+5=23

as 23 is not divisible by 9 so 9725 is not divisible by 9

b) 65458

6+5+4+5+8= 28

as 28 is not divisible by 9 so 65458 is not divisible by 9

Answer 2

Answer:

Hence 98712 is divisible by 9

Step-by-step explanation:

(1) If the sum of its digits is divisible by 9 then the given number is divisible by 9

98712

Sum of its digits =9+8+7+1+2=27

27 is divisible by 9.

Hence 98712 is divisible by 9