Mr. Smith calculated the average of 10 " three digit numbers". But due to a mistake he reversed the digits of a number and thus his average increased by 29.7. The difference between the unit digit and hundreds digit of that number is :
a) 4
b) 3
c) 2
d) 1
e) 0![]()
a) 4
b) 3
c) 2
d) 1
e) 0
