Question

A number A4571203B is divisible by 18 .find the value of A and B

Answer 1

Answer:

a = 6 , b = 8

number is 645712038

Step-by-step explanation:

a number is divisible by 18 when sum of all number is divisible by 18

sum of numbers here is 22 so 14 should be added

also last digit should be divisible by 18

hence answer is 6 and 8

Answer 2

Answer:

(1,4) or (3,2)

Step-by-step explanation:

to get divided by 18 , it should be divisible by 2,9

to get divisible by 9, sum of it should be by 9

so , sum is

A+B+22 shoul be made 27

hence A+B=5

to be divisible by 2 B should be even number.

hence two choices either B can be 2 or 4.

there fore A can be 3 or 1.