three meauring rods are 64 cm, 80 cm and 96 cm in length, What is the least length of cloth that can be measured exact number of times using any one of these rods ?

A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes . Both the taps are kept open for...

a box contains 20 electric bulbs , out of which 4 are defective . 2 bulbs are chosen at random from this box ....

There is a rectanguler parking lot with a length of 2x and a width of x. What is the ratio of the perimetr of...

The ratio of income of a to that of B is 7:5 and the expenditure of A to that of B is 3:2. If , at the end of...

An empty backet being filled with paint at a constant rate takes 6 min to be filled to 7/10 of its capacity ....

In distributing milk at a summer camp it is found that a quart of milk will fill either 3 large glass tumblers...