Question

Find the least value of a + b, if a and b are the missing digits. And the number 7293a79b is exactly divisible by2 and 9 both.
Pls answer fast
Last answer was incorrect

Answer 1

Answer:

least value of a+b=8

Step-by-step explanation:

if it is divisible by 2 then digit number must be divisible by 2

if it is divisible by 9 then sum of digits must be divisible by 9

7293a79b so b is may be(0,2,4,6,8)

7+2+9+3+a+7+9+b=37+a+b

here for a+b possible values are 8,17,....

let put b=0

then possible value for a is 8

so possible least value for a+b is 8

therefore number be 72938790

it's divisible by both 2 and 9