Poonia4India : Practice Reasoning Questions with Explanations for SSC/FCI Exam Set-1

The List of General Intelligence and Reasoning Questions with Explanations for SSC CHSL/FCI exam were given below, Candidate those who are applied for this exam can use this questions for preparation.

Directions (1-5): In the questions, Complete the series with suitable numbers.

1).90, 63, 70, 43, 55, 28, ___, ___.

a)    35, 23

b)    25,13

c)    45, 18

d)    40, 18

Explanation 

Alternate numbers from series by subtraction of 20, 15, 10
Or
Pair I 90 and 63, Pair II 70 and 43 and Pair III 55 and 28 have a difference of 27. Similarly, Pari 45,18 has the same difference.

2). 5, 7, 13, 23, 29, 55, ___, ___.

a)    69, 119

b)    63, 121

c)    33, 58   

d)    33,90  

Explanation 

Alternate numbers from series by addition of 8, 16, 32, 64 and so on.

3). 857, 969, 745, 1193, _____.

a)    2089   

b)    1084

c)    2114

d)    1224

Explanation 

See the difference between the consecutive numbers, +112, -224, +448. Hence the next difference must be - 896. Therefore the answer is 297.

4). 1, 3, 2, ____, 3, 7

a)    9   

b)    7

c)    3

d)    5

Explanation 

See Alternate numbers

5). 4, 7, 10, 13, 16, 19, 22, _____.

a)    12  

b)    14

c)    25

d)    24

Explanation 

See the alternate numbers or the series in an A.P with d=3 or the succeeding number is got by adding 3.

Directions (6-10): Find the missing number in the series from among the four alternatives given below it.

6). 7  12  15  16  ?  12  7

a)    12

b)    14

c)    15

d)    16

Explanation 

The series is same when its terms are written in reverse order.

7). 6  8  9  12  14  18  ?

a)    19   

b)    21

c)    23

d)    25

Explanation 

Alternate terms of the given series form two different series.

8). 11  10  ?  100  1001  1000  10001

a)    101

b)    110

c)    111

d)    1011

Explanation 

Each of the even terms is one less than its immediate predecessor.

9). 5  9  15  23  33  45  ?

a)    55

b)    57

c)    59   

d)    61

Explanation 

Terms progressively increase with the addition 4, 6, 8, 10, etc. .

10). 0  3  8  15  24  35  ?

a)    48

b)    47

c)    46

d)    44

Explanation 

The terms of the given series are 12 -1, 22 -1, 32 -1, 42 -1, 52 -1, 62 -1, 72 -1.

Answers:                         

1). c) 2). a) 3). d) 4). d) 5). c) 6). c) 7). b) 8). a) 9). c) 10). a)