765 chairs are to be arranged in columns in such a way
that the number of chairs in each column should be
equal to the number of columns. How many chairs will
be excluded to make the arrangement possible.
my math textbook is my role model. no matter how many problems it has it never sucide's.
prabhpreet singh
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?