If the score of five students is 8,7,9,16,25, then their mean deviation will be.

1, 3, 5, 7, ………total average of 25^th number  is:

If two complementary angles are in the ratio of 2:3. find the ratio of square of smaller angle to square of greater?

Directions: Each of the questions consists of a question followed by three statements. You have to study the questions and the statements and decide which of the statements(s) is/are necessary to answer the question. 

What was the percentage of discount offered?
 I. Profit earned by selling the article for Rs. 252 after giving discount was Rs. 52.
 II. Had there been no discount the profit earned would have been Rs. 80
 III. Had there been no discount the profit earned would have been 40%.

If a, b and c are in GP and a^1/x=b^1/y=c^1/z. The value of 2y is?

The value of P + Q in the following table is-

What is the approximate value will come in place of the question mark(?) in the following questions?

From a point P on a level ground, the angle of elevation of the top tower is 30^o.If the tower is 100 m high, the distance of point P from the foot of the tower is: