A "CD" player having a price tag of Rs. 900 is sold for rs. 729 after 2 successive discounts. if the first discount was 10%, then what was the second discount ?
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 ?
frank
Don't learn Mathematics just to prove that you are not a mentaly simple person but learn it to prove that you are intelligent