Question

7. Police is trying to find out 3-digits of a mobile
number 98100 A B 00 C. It is known that the sum
of A, B & C is 6. Also, B is twice that of C. Ifa
2-digit number is formed using A as tens digit and
C as unit's digit and if we subtract the number
formed by reversing the digits, then we get 18 as
the result. The value of B is

Answer 1

Step-by-step explanation:

a+b+c = 6

b=2c

ac-ca=18

by trial and error

a=3 ,c=1

31-13=18

so , a+b+c = 6

3+b+1= 6

=> b=2

3+2+1=> 6

also b=2c=> 2=2(1)

so the number is 9810032001