Number S is obtained by squaring the sum of digits of a two digit number D. If the difference between S and D is 27, then the two digit number D is:
Correct Answer : B
Convert the number 1982 from base 10 to base 12. The result is:
The digits of a three-digit number A are written in the reverse order to form another three-digits number B. If B > A and B - A is perfectly divisible by 7, then which of the following is necessarily true?
If R = (3065-2965)/(3064+2964) then :