3 On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is : A) Rs. 45 B) Rs. 50 C) Rs. 55 D) Rs. 60 E) Rs. 70
4 The angle of elevation of the sun, when the length of the shadow of a tree is root of 3 times the height of the tree, is : A) 30 degree B) 45 degree C) 60 degree D) 90 degree
5 In a simultaneous throw of two coins, the probability of getting at least one head is : A) 1/2 B) 1/3 C) 2/3 D) 3/4
6 If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50. What is the compound interest on the same sum at the same rate and for the same time ? A) Rs. 60 B) Rs. 54.25 C) Rs. 52 D) Rs. 51.25 E) Rs. 53.25
7 A man can row 18 kmph in still water. It takes him thrice as long to row up as to row down the river. Find the rate of stream. A) 7 km/hr B) 10 km/hr C) 9 km/hr D) 8 km/hr E) 9 km/hr
8 A walks around a circular field at the rate of one round per hour while B runs around it at the rate of six rounds per hour. They start in the same direction from the same point at 7.30 a.m. They shall first cross each other at : A) 10 min B) 12 min C) 15 min D) 30 min E) 35 min
9 Two clocks are set to show the correct time at 3:00 am. The clocks uniformly lose 3 minutes and 4 minutes respectively in an hour. If the clock which loses 3 minutes per hour shows the time as 8:42 a.m on the same day, then what time does the other clock show? A) 8:36 a.m. B) 8:30 a.m. C) 8:32 a.m. D) 8:34 a.m. E) 8:35 a.m.
10 A certain sum of money becomes three times of itself in 20 Yrs at simple interest. In how many years does it become double of itself at the same rate of simple interest? A) 8 Yrs B) 10 Yrs C) 12 Yrs D) 14 Yrs E) None
11 If $\sqrt{2}$ = 1.414 ,the square root of $\frac{\sqrt{2}-1}{\sqrt{2}+1}$ is nearest to : A) 0.172 B) 0.414 C) 0.586 D) 1.414
12 A painter mixes blue paint with white paint so that the mixture contains 10% blue paint.In a mixture of 40 litres paint, how many litres of blue paintshould be added, so that the mixture contains 20% of blue paint? A) 2.5 litres B) 4 litres C) 5 litres D) 2 litres
13 Zinc and copper are in the ratio of 5 : 3 in 200 gm of an alloy.How much grams of copper be added to make the ratio as 3 : 5? A) $133\frac{1}{3}$ B) $\frac{1}{200}$ C) $72$ D) $66$
14 The cost of type 1 rice is Rs.15 per kg and type 2 rice is Rs.20 per kg.If both type1 and 2 are mixed in the ratio of 2 : 3, then the price per kg of the mixed variety of rice is A) Rs.18 B) Rs.18.50 C) Rs.19 D) Rs.19.50
