Any money at the rate of simple interest becomes Rs 1143 in 3 years and Rs 1305 in 5 years Find the rate of principal and interest.

Find the value of k in $$ {26\over 21}:{24\over 9 }::k :{14\over 13}$$

If $$  3 ^{2x-y}=3^{x+y}=\sqrt{27}$$ then the value of y is

A and B are 2 cities 60 Km. apart. Two men P and Q start together to walk from A to B. Speed of P is 4 Km / hr. less than that of Q. Q reaches the city B and return back . He meets P at 12 Km away from city B. What is the speed of P? 

A bag contains 3 white balls and 2 black balls. Another bag contains 2 white and 4 black balls. A bag and a ball are picked random. The probability that the ball will be white is:

9 persons are seated around a round table. What is the probability that two particular persons sit together?

Directions : Given line graph shows the data of male & female population in 5 different cities. Read the data carefully and answer the questions.

What is average of male population in all cities?

If the sum of the interior angles of a regular polygon be 1080 °, the number of sides of the polygon is