Question

87. For what value of K, the number 7236K2 is
divisible by 8?
(A) 7
(B) 5
(C) 4
(D) 9​

Answer 1

Answer:

K =7

Step-by-step explanation:

For what value of K, the number 7236K2 is

divisible by 8?

(A) 7

(B) 5

(C) 4

(D) 9​

7236K2 is

divisible by 8?

If 6K2 is divisible by 8

672 is divisible by 8

So k = 7

Answer 2

Answer:

The value of K is 7.                  

Step-by-step explanation:

Given : The number 7236K2.

To find : For what value of K the given number is divisible by 8?

Solution :

Test of divisibility of "8" define that,

If the last three digits of a number is divisible by '8' then the  number is also divisible by '8'.

The last three digit is 6K2.

Put the given option numbers one by one and apply test of divisibility of 8.

A) For K=7, 672

$\frac{672}{8}=84$

It completely divides which means The value of K is 7.

B) For K=5, 652

$\frac{652}{8}=81.5$

It does not completely divides.

C) For K=4, 642

$\frac{642}{8}=80.25$

It does not completely divides.

D) For K=9, 692

$\frac{692}{8}=86.5$

It does not completely divides.