In a proportion, the 1^st , 2^nd and 4^th  terms are 51, 68 and 108, respectively. What is the 3^rd term?

The base of a solid right prism of height 10 cm is a square and its volume is 160 cm³. What is its total surface area of the prism (in cm²)?

Direction: Study the following line graph carefully and answer the questions given below.
 In the below line graph, the number of animals in two zoo A and B in the years – 2001, 2003, 2005 and 2007 is given.

What is the ratio of the number of animals in zoo-A in the years 2001 and 2005 together and the number of animals in zoo-B in the years 2003 and 2007 together?

In a circle with centre O, a diameter AB is produced to a point P lying outside the circle and PT is a tangent to the circle at the point C on it. If ∠BPT = 36°, then what is the measure of ∠BCP?

If $$x+{16\over x}=8$$, then the value of $$x^2+{32\over x^2}$$ is:

The average of 30 numbers is 40 and that of the other 40 numbers is 30. The average of all the numbers is-

If x = 19 and y = 18, then the value of   $$ {{x^2}+{y^2}+{xy}}\over x^3-y3 $$ is

The base of a right pyramid is a square of side 10 cm. If its height is 10 cm, then the are (in cm²) of its lateral surface is: