Question

6. Test the divisibility of the following numbers by 9.
i. 8521
ii. 951103
39447​

Answer 1

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a) Not Divisible

b) Not Divisible

c) Divisible

Step-by-step explanation:

a) 8 + 5 + 2 + 1 = 16

⇒ 16 is not divisible by 9

b) 9 + 5 + 1 + 1 + 0 + 3 = 19

⇒ 19 is not divisible by 9

c) 3 + 9 + 4 + 4 + 7 = 27

⇒ 27 is divisible by 9

Answer 2

Rule of divisibility test by 9 = To test divisibility of a number by 9 we will add all digits itself like to check divisibility of 33 we will add 3 + 3 which will be 6

Now let's start testing the divisibility of given numbers by 9

i) 8521

To test the divisibility of this number by 9, We will follow the Rule By adding all digits of the number itself as

= 8+5+2+1

= 16

As we can see the sum, which is 16 and it is not divisible by 9, so the given number will also not divisible by 9.

ii) 951103

To test the divisibility of this number by 9, We will follow the Rule By adding all digits of the number itself as

= 9+5+1+1+0+3

= 19

As we can see the sum, which is 19 and it is also not divisible by 9, so the given number will also not divisible by 9.

iii) 39447

To test the divisibility of this number by 9, We will follow the Rule By adding all digits of the number itself as

= 3+9+4+4+7

= 27

As we can see the sum, which is 27 and it is divisible by 9, so the given number will divisible by 9.

So, the answer of your question is option (iii) which is 39447