A ladder rests against a wall at a height of 10 meters. If the ladder makes 30° along the ground. Find the distance from the wall of the foot of the ladder.

If $$ P={{x^2-36}\over{x^2-49}}$$ and $$ Q={{x+6}\over{x+7}}$$ then the value of $$ {P\over{Q}}$$ is.

The average mathematics marks of two section A and B of class IX in the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratio of number of student of section A and B is:

If a man were to sell his chair for Rs. 720, he would loss 25 %. To gain 25% he should sell it for__

A certain number when divided by 175 leaves a remainder 132. When the same number is divided by 25, the remainder is:

If a+b=17,and a – b =9, then the value of $$ {(4a^2+4b^2)}$$ is:

3400 Rupees is divided among A, B, C, D in such a way that the share of A and B, B and C, C and D may be as 2:3, 4:3 and 2:3 respectively. The sum of shares of B and D is:

If the perimeter of an equilateral triangle is 18 cm, then length of each median is