When 75% of a two-digit number is added to it, the digits of the number are reversed. Find the ratio of the unit's digit to the ten's digit in the original number
Correct Answer : C
If X is an odd integer, which of the following must be odd?
1. 2x + x II. x + x + x III. x * x * x
The difference between the greatest number and the smallest number of 6 digits using all but
A boy writes all the numbers from 100 to 999. The number of zeroes that he uses is 'a', the number of 5's that he uses is 'b' and the number of 8's he uses is 'c'. What is the value of b+c-a?