Question

4. Find the value of digit x satisfying the given condition.
(a) If 7x3 is a multiple of 9​

Answer 1

Answer:

8

Step-by-step explanation:

7x3 multiple of 9

From multiplication rule of 9,

sum of digits must divisible by 9

so, 7+x+3 = 10+x

( 10+x ) divisible by 9, only 8 suits in the place of x

i.e.,18 is divisible by 9

so x=8