If a and b are two odd positive integers, by which of the following integers is (a^4 - b^4) always divisible ?
If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?
If A and B together can complete a work in 18 days, A and C together in 12 days and B and C together in 9 days, then B alone can do the work in
If A and B together can finish a piece of work in 20 days, B and C in 10 days and C and A in 12 days, then A, B, C jointly can finish the same work in
If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40 km/hr, then what is the speed of the stream ?
If a certain sum of money becomes doubles at simple interest in 12 years, what would be the rate of interest per annum?
If a man earns Rs.2000 for his first 50 hours of work in a week and is then paid one and a half times his regular hourly rate for any additional hours, then the hours must he work to make Rs.2300 in a is
If a man were to sell his chair for Rs. 720, he would lose 25%. To gain 25% he should sell it for:
If a man were to sell his handcart for Rs. 720, he would loss 25% . To gain 25% , the selling price is = ?
If a money becomes double in 16 years, then how much will it be multiplied in 8 years?
