Question

test 60,250 and 1440 for divisibility by 2,3,5 and 10

Answer 1

Heya mate!

Here is your answer....

As 60,250 and 1440 end with 0,they are divisible by 2,5 and 10.

a)60
=6+0
=6(rule:if the sum of the digits in the number is divisible by 3,then the number is exactly divisible by 3)

So,60 is divisible by 3

b)250
=2+5+0
=7
As the sum of the digits of the number is not divisible by 3,then the number is not divisible by 3...
So,250 is not divisible by 3

c)1440
=1+4+4+0
=9
As the sum of the digits of the number is divisible by 3,then the number is exactly divisible by 3

Note:250,60 and 1440 are divisible by 2 because they are all even numbers...

Hope this helps....

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Answer 2

All numbers ending with 0,2,4,6,8 are divisible by 2. As 60250 and 1440 end with 0, they are divisible by 2.

We add the digits of the nos. to check the divisibility of 3. (6+2+5=13). Therefore 60250 is not divisible by 3. (1+4+4 =9) . Therefore it is divisible by 3.

All nos. ending with 0 or 5 are divisible by 5.
60250 and 1440 end with 0 so they are divisible by 5.

All nos. ending with 0 are divisible by 10. So 60250 and 1440 are divisible by 10.

HOPE THIS HELPS YOU.✌️
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