Question

Ckeck which of the following numbers are divisible by 7:- 63,878​

Answer 1

Answer:

Step-by-step explanation:

Divisible by 7 is discussed below:

We need to double the last digit of the number and then subtract it from the remaining number. If the result is divisible by 7, then the original number will also be divisible by 7.

$63\: is \:divisble \:by\: because 7*9=63$

$878/7=125.428571429\\which\: is\: not\: divisble\: by \:7$

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Answer 2

Answer:

63 no. is divisible by 7