Question

A number consists of three digits of which the middle one is zero and their sum is 4. If he number formed by interchanging the first and last digits is greater than the number itself by 198, then the difference between the first and last digits is

Answer 1

x+Z=4............(i)

Ioox +o+z-(lOOz +o+x) = 198

we get x-z = 2.......... (,2,)

(1) - (2) = 2x = 6, x=3

so z=l

diff=3-1=2.... Ans