Quantitative Aptitude

Pick Wrong No.

Quantitative Aptitude Exercise Mode

Pick Wrong No.

Practice and master this topic with our carefully crafted questions.

10 Questions
15 Minutes
0% Completed
QUEST ? ✓ !
Directions to Solve

Find out the wrong number in the given sequence of numbers.

Question 1
8, 13, 21, 32, 47, 63, 83

A
47
B
63
C
32
D
83
Correct Answer: Option A

Go on adding 5, 8, 11, 14, 17, 20.

So, the number 47 is wrong and must be replaced by 46.

Question 2
582, 605, 588, 611, 634, 617, 600

A
634
B
611
C
605
D
600
Correct Answer: Option A

Alternatively 23 is added and 17 is subtracted from the terms. So, 634 is wrong.

Question 3
25, 36, 49, 81, 121, 169, 225

A
36
B
49
C
121
D
169
Correct Answer: Option A

The numbers are squares of odd natural numbers, starting from 5 up to 15.

So, 36 is wrong.

Question 4
46080, 3840, 384, 48, 24, 2, 1

A
1
B
2
C
24
D
384
Correct Answer: Option C

The terms are successively divided by 12, 10, 8, 6, ...etc.

So, 24 is wrong, it should be 8 (48/6 = 8).

Question 5
125, 127, 130, 135, 142, 153, 165

A
130
B
142
C
153
D
165
Correct Answer: Option D

Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively.

So, 165 is wrong.

Question 6
52, 51, 48, 43, 34, 27, 16

A
27
B
34
C
43
D
48
Correct Answer: Option B

Subtract 1, 3, 5, 7, 9, 11 from successive numbers.

So, 34 is wrong.

Question 7
105, 85, 60, 30, 0, -45, -90

A
0
B
85
C
-45
D
60
Correct Answer: Option A

Subtract 20, 25, 30, 35, 40, 45 from successive numbers.

So, 0 is wrong.

Question 8
4, 6, 8, 9, 10, 11, 12

A
10
B
11
C
12
D
9
Correct Answer: Option B

Each number is a composite number except 11.

Question 9
22, 33, 66, 99, 121, 279, 594

A
33
B
121
C
279
D
594
Correct Answer: Option C

Each of the number except 279 is a multiple of 11.

Question 10
1, 2, 6, 15, 31, 56, 91

A
31
B
91
C
56
D
15
Correct Answer: Option B

1, 1 + 12 = 2, 2 + 22 = 6, 6 + 32 = 15, 15 + 42 = 31, 31 + 52 = 56, 56 + 62 = 92

Last number of given series must be 92 not 91.

1 2 Next
Page 1 of 2