Question

In the number 23*52 ,replace * by a digit so that the number is divisible by 9

Answer 1

Answer:

Answer

(i) 49×2207 is divisible by 9

Then 4+9+z+2+2+0+7 is divisible by 9

24+x is divisible by 9

24+x=27

x=27−24

=3 , which is divisible by 9

∴x=3

(ii) 5938×623 is divisible by 9

Then , 5+9++8+x+6+2+3 is divisible by 9

36+x is divisible by 9

So 36+x=36or45

x=36−36=0orx=45−36=9

∴x=0,9