If x+y=7 and x2+y2=25, then which one of the following equals the value of x3+y3?

A worker is hired for 7 days. Each day, he is paid 10 Tk. more than what he is paid for the preceding day one...

In a factory, there are workers, executives and clerks. 59% of the employees are workers, 460 are executives a...

A survey of n people in the town of X found that 50% of them prefer Brand A. Another survey of 100 people in t...

Which set of numbers is like the given set [48,24,12] ?

A shopkeeper purchases 70kg of potatoes for Tk. 420 ans sold the whole lot as the rate of Tk. 6.50 per kg. Wha...

A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 1/3 hours to fill the tank. The lea...