Question

what is the value of k such that 70k. is divisible by 7​

Answer 1

Answer:

We know the divisibility rule for 7:

Choose the last digit of the number, multiply it by 2, and subtract the product from the rest of the number and the answer is 0 or divisible by 7.

Here, 707 is divisible by 7.

When we multiply with 2 the last digit becomes 7014.  

Then subtract the last two digit number 14 from 70,  

we get 70−14=56 is divisible by 7.

So, option B is correct.

Answer 2

Step-by-step explanation:

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