A dealer marks his goods 20% above cost price. He then allows some discount on it and makes a profit of 8%. The rate of discount is

Two adjacent sides of a parallelogram are 21 cms and 20 cms. The diagonal joining the end points of these two sides is 29 cms. The area of the parallelogram (in sq.cms) is

A and B together can do a piece of work in 36 days, B and C together can do it in 24 days. A and C together can do it in 18 days. The three working together can finish the work in

Find the least number which must be subtracted from 18265 to make it a perfect square

Which of the following pairing is incorrect

Algal bloom results from

The polar regions are sparsely populated because of

The antiparticle of an electron is