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Logical Reasoning

Logical Reasoning Questions and Answers

Showing 11 - 20 of 23 questions

11

Complete the series 2, 3, 6, 15, ?, 123

a

45

b

56

c

42

d

50

correct answer c

First term → 2

Second term → (2 *3 -3) = 3

Third term → (3 *3 -3) = 6

Fourth term → (6 *3 - 3) = 15

sixth term → (15 *3 - 3) = 42

12

In the following number series a wrong number is given. Find out the wrong number.

1, 3, 10, 21, 64, 129, 356, 777

a

945

b

568

c

890

d

356

correct answer d

The given pattern is,
2nd term → 1*2+1 = 3
3rd term → 3*3+1 = 10
4th term → 10*2+1 = 21
5th term → 21*3+1 = 64
6th term → 64*2+1 = 129
7th term → 129*3+1= 388
So, 7th term 356 is wrong and must be replaced by 388.

13

Complete the series 9, 27, 31, 155, 161, 1127, ?

a

6945

b

1135

c

5890

d

2356

correct answer b

Given pattern is,
2nd term → 9*3 = 27
3rd term → 27+4 = 31
4th term → 31*5 = 155
5th term → 155+6 = 161.
6th term → 161*7 = 1127
Missing term → 1127+8 = 1135.

14

Complete the series 2, 7, 27, 107, 427, ?

a

945

b

1707

c

580

d

9356

correct answer b

The pattern is,
2nd term → 2 +(5 *12) = 7
3rd term → 7 +(5 *22) = 27
4th term → 27 +(5 *42) = 107
5th term → 107 +(5 *82) = 427
Missing term → 427 +(5 *162) = 1707

15

Sunday, Monday, Wednesday, Saturday, Wednesday, Monday, .....

a

Sunday, Sunday

b

Sunday, Monday

c

Sunday, Wednesday

d

Sunday, Saturday

correct answer a

Sunday to Monday = no gap
Monday to Wednesday = One day gap.
Wednesday to Saturday = Two days gap.
Saturday to Wednesday = Three days gap.
Wednesday to Monday = Four days gap.
In the next term there must be five days and six days gap.
So, Next term would be Sunday, Sunday.

16

Complete the series 2816, ? , 176, 44, 11.

a

704

b

1408

c

352

d

2640

correct answer a

Logic: Next term = Previous term /4
2816 /4 = 704
704 /4 = 176.
176 /4 = 44.
44 /4 = 11.

17

Complete the series 113, 225, 449, ? , 1793

a

897

b

456

c

356

d

679

correct answer a

113
113 * 2 = 226 -1 = 225
225 * 2 = 450 -1 = 449
449 * 2 = 898 - 1 = 897
897 * 2 = 1794 -1 = 1793

18

Which of the following will come in place of the question mark (?) in the following sequence?

PRODUCTIVITY, RODUCTIVIT, ODUCTIVI, ?

a

DUCTIV

b

DUCTLY

c

UCTIV

d

DUCTI

correct answer a

PRODUCTIVITY = RODUCTIVIT.(Bold letters are removed.)

RODUCTIVIT = ODUCTIVI.

ODUCTIVI = DUCTIV.

19

Complete the series 6, 24, 60,120, 210, ?

a

336

b

366

c

330

d

660

correct answer a

First Number = 1 *2 *3 = 6
Second Number = 2*3*4 = 24
Third Number = 3*4*5 = 60
Fourth Number = 4*5*6 = 120
Fifth Number = 5*6*7 = 210
Sixth Number = 6*7*8 = 336.

Alternatively,

2*2*2-2=6
3*3*3-3=24
4*4*4-4=60
5*5*5-5=120
6*6*6-6=210
7*7*7-7=336.

20

Complete the series 6, 11, 31, 121, 601, ?

a

3369

b

3660

c

3601

d

6788

correct answer c

First Term = 6.

Second term = 6*2 -1 = 11.

Third term = 11* 3 - 2 = 31.

Fourth term = 31 *4 - 3 = 124 -3 = 121.

Fifth term = 121*5 - 4 = 601.

Sixth term = 601 *6 = 3606 - 5 = 3601.

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