CGL Mains : Reasoning Quiz



1.  2, 5, 9, 19, 37 ?
(a) 73                            
(b) 75          
(c) 76                            
(d) 78

2. 22, 24, 28, ?, 52, 84
(a) 36                              
(b) 38          
(c) 42                              
(d) 46

3.  1, 4, 27, 16, ?, 36, 343
(a) 25                            
(b) 87          
(c) 120                          
(d) 125

4.  1/2, 3/4, 5/8, 7/16, ?
(a) 9/32                          
(b) 10/17      
(c) 11/34                        
(d) 12/35

5.  1, 9, 25, 49, ?, 121

(a) 64                            
(b) 81          
(c) 91                            
(d) 100

6.  B, D, F, I, L, P, ?
(a) R                              
(b) S            
(c) T                              
(d) U

7.  U,B,I,P,W ,?
(a) D                              
(b) F            
(c) Q                              
(d) U

8.  Z, ?, T, ?, N, ?, H, ?, B

(a) W,Q,K,E                  
(b) W,R,K,E
(c) X,Q,K,E                  
(d) X,R,K,E

9.  a , d , c , f , ?, h , g , ? , i
(a) e, j                          
(b) e, k        
(c) f, j                          
(d) j, e

10. A, I, P, V, A, E, ?
(a) E                            
(b) F            
(c) G                            
(d) H

Answers with Solutions
1.(b)
Clearly, we have: 2 x 2 + 1= 5, 5 x 2 -1 = 9, 9 x 2 + 1 = 19, 19 x 2 -1 = 37,
So, missing term = 37 x 2 + 1 =75.

2.(a)
The pattern is +2, +4, +8, +16
So, missing term = 28 + 8 = 36.

3.(d)
Clearly, the given the series consists of cubes of odd numbers and squares of even numbers, I. e, 13, 23, 33, 43, ….
So, missing term = 53 = 125.

4.(a)
Clearly, the numerators of the fractions in the given sequence form the series 1, 3, 5, 7, in which each term is obtained by adding 2 to the previous term.The denominators of the fractions form the series 2, 4, 8, 16, i.e. 21, 22, 23, 24.So, the numerator of the fractions will be (7 +2) i.e. 9 and the denominator will be 25 i.e. 32.
Thus, the next term is 9/32.

5.(b)
The given series consists of squares of consecutive odd numbers i.e. 12, 32, 52,72,…… So, missing term = 92 =81

6.(c)
B(+2)→D (+2)→ (+3)→ (+3)→ (+4)→P (+4)→T

7.(a)
U (+7)→B (+7)→I (+7)→P (+7)→ (+7)→D

8.(a)
Z (-6)→T (-6)→N (-6)→ (-6)→B
Z (-3)→ (-3)→T (-3)→Q (-3)→N (-3)→K (-3)→H (-3)→ (-3)→B

9.(a)
 a (+3)→d (-1)→c (+3)→f (-1)→e (+3)→ (-1)→g (+3)→j (-1)→i.

10.(d)

A (+8)→I (+7)→P (+6)→V (+5)→A (+4)→E (+3)→H

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