Quant Quiz

Directions (1-5): What should come in place of the question mark (?) in the following number series?
1.373, 187, 95, 50, ?, 18.75
(1) 25.6 (2) 28.5 (3) 33.8 (4) 31.7 (5) None of these


2.4.5, 18, 2.25, ?, 1.125, 72
(1) 27 (2) 25.5 (3) 36 (4) 40. (5) None of these 

3.59.76, 58.66, 56.46, 53.16, ?, 43.26
(1) 48.76 (2) 46.53 (3) 43.46 (4) 43.26 (5) None of these

4.236, 357, 501, 670, ?, 1091
(1) 846 (2) 895 (3) 839 (4) 869 (5) None of these

5.7, 35, 175, ?, 4375, 21875
(1) 1570 (2) 875 (3) 1750 (4) 785 (5) None of these

Directions (6–10): Study the given information carefully and answer the questions that follow— 
A bag contains 4 red, 3 black, 2 green and 4 yellow balls.
6.If two balls are picked at random, that is the probability that both are of different color?
(1)31/39 (2) 21/37 (3) 33/37 (4) 32/39 (5) None of these

7. If four balls are picked at random, what is the probability that none of them is black or yellow?
(1) 3/143 (2) 5/143 (3) 15/143 (4) 3/715 (5) None of these

8.If three balls are picked at random, what is the probability that at least one is green?
(1) 22/25 (2) 11/13 (3) 22/39 (4) 15/26 (5) None of these

9.If three balls are picked at random, what is the probability that exactly two of them are black?
(1) 128/143 (2) 15/143 (3) 3/143 (4) 4/105 (5) None of these

10.If four balls are picked at random, what is the probability that all are of different color? 
(1) 54/715 (2) 72/715 (3) 96/715 (4) 13/143 (5) None of these

Answer

QUE	ANS	QUE	ANS
1	2	6	1
2	3	7	1
3	1	8	5
4	5	9	2
5	2	10	3