If x and y are consecutive positive integers, which of the following must be an even integer ?

A company's profits have doubled for each of the last 5 years . If the total profits for the last 5 years were...

Which of the following is equal to 456*(72)+28*(456) ?

The lengths of the sides of a triangle are in the ratio of 3 to 5 to 6 . If the perimeter of the triangle is 7...

How many "8" will you pass on the way when you count from 1 to 100 ?

A father said to this son, "I was as old as you are at the present at the time of your birth". If the father's...

In a group of people solicited by a charity, 30% contributed TK. 40 each, 45% contributed TK. 20 each and the...