Instructions

For the following questions answer them individually

Question 71

Four whole numbers, when added three at a time, give the sums 180, 197, 208 and 222. The largest of these numbers is

Question 72

The number of circular pipes with an inside radius 0.5 cm which will carry the same amount of water as a pipe with an inside radius of 3 cm is

Question 73

Assume that the average volume of a raindrop is 10 cubic millimetres. A city spread in 10 km x 10 km received 1 cm of rain. The number of raindrops that fell on the city is

Question 74

The price of a pen was twice that of a pencil. One person ordered 4 pens and some pencils. At the time of preparing the bill, the prices of these articles interchanged. This increased the bill by 50%. The ratio of number of pens to the number of pencils was

Question 75

The area of a square inscribed in a semicircle is to the area of the square inscribed in the entire circle as

Question 76

The price of an article was increased by p % and then the new price was decreased by p%. If the last price was â‚¹ 100, the original price was

Question 77

A cylinderical oil tube, lying horizontally, has an interior length of 10 cm and aninterior radius 3 cm. If the rectangular surface of the oil has an area of 40 cm?, the depth ofoil in the tube is

Question 78

A square and an equilateral triangle have the same perimeter. Let A be the area of the circle circumscribed about the square and-B be the area of the circle circumscribed about thetriangle. Then the ratio A: B is

Question 79

Surface area of a cuboid is 22 $$cm^2$$ and the sum of the lengths of all its edges is 24 cm. The length of each diagonal of the cuboid, in cm, is

Question 80

A right circular cylinder has its height two timesits radius. It is inscribed in a right circular cone having its diameter 10 cm and altitude 12 cm, and the axes of both the cylinder and cone coincide. The radius of the cylinder is