Q. A bag contains 20 balls (5 green balls and certain number of red balls and blue balls). If 2 balls are taken out one after without replacement, the probability that the first ball is red and the second ball is green is 2/19. What is the difference between number of red and blue balls in the bag?
1) 2
2) None of those given as options
3) 1
4) 4
Q. The difference between time taken by Boat-A to cover 80 km upstream and that taken to cover 80 km downstream is 1 hr. If the respective ratio between its up stream and downstream speeds is 4 : 5, what distance will Boat-A cover downstream in 2 hr? (in Km)
1) 48
2) 32
3) 40
4) 44
Q. Annie invested a total sum of Rs. 10,000 in scheme A (at 10% p. a. compound interest, compounded annually) and in scheme B (at 15% p. a. simple interest). At the end of 2 years, the interest received from scheme B is Rs. 960 more than that from scheme A. How much did Annie invest in Scheme A? (in Rs.)
1) 5000
2) 4500
3) 4800
4) 4000
Q. A jar contained 72 litre of pure milk, to which 18 litre of water was added. If 45 litre of the resultant mixture from the jar is taken out, what will be the quantity of milk remaining in the jar? (in litre)
1) 60
2) 36
3) 42
4) None of those given as options
Q. Train A travelling at a speed of 54 kmph takes 80 seconds to cross a platform. train B traveling at a speed of 72 kmph takes 48 seconds to cross the same platform (as train A). If the length of train B is half of that of train A, what is the length of train A (in meters)?
1) 480
2) 540
3) 420
4) 360
Q. 79.98% of 300.12 ÷ 3.99 = ?
1) 80
2) 240
3) 60
4) 120
Q. 316 ÷ 15.02 x √38 + ? = 11.992
1) 32
2) 18
3) 38
4) 8
Q. 2430 ÷ 7.998 - 79.75 + ?2 = 850
1) 30
2) 25
3) 9
4) 20
Q. A and B start a business with their initial investments in the respective ratio of 3 : 2, 'x' months after the start of the business, B leaves and C joins. Respective ratio between initial investments of B and C is 1 : 2. If B's share out of the total annual profit of Rs. 5700 is Rs. 600, for how many months did C invest?
1) 4
2) 8
3) 3
4) 2
Q. The total surface area of a right circular cylinder (A) is 200π cm2 and the respective ratio between its diameter and height is 2 : 3. If a square's side is equal to A's height what will be the square's perimeter? (in cm) -
1) 60
2) 80
3) 20
4) Other than those given as options
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