1). 3, 10, 32, 111, ?, 2315, 13902

A)  512
B) 460
C) 424
D) 412                 Practice set for railway
E) None of these

2). 7, 13, 24, 40, 61, ?

A)  87
B) 92
C) 89
D) 93
E) None of these

3). In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

A).63
B).90
C).126
D).45
E).135

4). There are 6 boxes numbered 1, 2, 6. Each box is to be filled up either with a red or a green ball in such a way that at least 1 box contains a green ball and the boxes containing green balls are consecutively numbered. The total number of ways in which this can be done is

A). 5
B). 21
C). 33
D). 60
E). 6

5).Find remainder of (7^99)/6

A) 2
B) 1
D) 3
E) None of these

6). what is the greatest number of 4 digits that when divided by any of the numbers 6, 9, 12, 17 leaves a remainder of 2?

A) 9792
B) 9982
C) 9794
D) 9906
E) None of these

7). in a fraction, numerator is increased by 20% and the denominator is diminished by 30%. The new fraction obtained is 2/3. The original fraction is:

A) 7/18
B) 5/9
C) 6/11
D) 3/5
E) None of these

8). Find a single discount equivalent to a discount series of 25%, 20%, 10%-

A) 23%
B) 46%
C) 48%
D) 55%
E) 50%

9). by selling pen for ` 81, a shopkeeper gain 35%. At what price should he sell the pen to gain 20% on the cost price?

A) Rs. 72
B) Rs. 66
C) Rs. 92
D) Rs. 76
E) None of these

10). The ration between the present ages of ravi and vinay is 7:15, respectively. 2 yr from now, vinay’s age will become twice the age of ravi. What was the difference between their ages 5 yr ago?

A) 13 yr
B) 16 yr
C) 11 yr
D) 18 yr
E) none of these

1). (B)
(3+7)*1=10,
(10+6)*2=32

(32+5)*3=111
(111+4)*4=460
(460+3)*5=2315
(2315+2)*6=13902

2). A)
7+6=13
13+11=24
24+16=40
40+21=61
61+26=87

3). A) Required number of ways = (7C5 x 3C2) = (7C2 x 3C1)
=63

4). (B)

If only one of the boxes has a green ball, it can be any of the 6 boxes. So, this can be achieved in 6 ways.
If two of the boxes have green balls and then there are 5 consecutive sets of 2 boxes. 12, 23, 34, 45, 56.
Similarly, if 3 of the boxes have green balls, there will be 4 options.
If 4 boxes have green balls, there will be 3 options.
If 5 boxes have green balls, then there will be 2 options.
If all 6 boxes have green balls, then there will be just 1 options.
Total number of options = 6 + 5 + 4 + 3 + 2 + 1 = 21.
5). B

6). C
LCM of 6, 9, 12, 17 = 612
Greatest Number of 4 digit divisible by 612 is 9792, to get remainder 2 number should be = 9792 + 2 = 9794

7). A

8). B

9). A

10). B
Present age of ravi = 7x and present age of vinay = 15 x
According to the question, 15x+2 = 2(7x + 2)
15x – 14 x = 4-2   = x= 2
Required Difference = 15x- 7x = 8x  = 16 yr

Quest For Quant :: Railway SSC CGL SSC CHSl And SSC CPO Exams Reviewed by SSC IBPS on 13:57:00 Rating: 5