Mental Ability - Questions

1 .
Find the missing number in the following series?

3, 5, 5, 19, 7, 41, 9, ?
A)
71
B)
61
C)
79
D)
69

Correct Answer : Option (A) - 71

Explanation : Fiest series : 3, 5, 7, 9

Second series : 5, 19, 41, ?

Difference of Second series are 14, 22, 30 etc

Next term is 41+30 i.e equal to 71

2 .
C L R T B Q S M A P D I  N F J K G Y X

Four of the following  five are alike in a certain way and so form group. Which is the one that does not belong to the group?

1. LBT     2.IJF    3. PID    4. BMS
A)
BMS
B)
LBT
C)
IJF
D)
PID

Correct Answer : Option (D) - PID

Explanation :
Therefore, PID is not in the form of other patterns.

3 .
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z .

Which letter in this alphabet is the eighth letter to the right of the letter and  which is tenth letter to the left of the last but one letter of the alphabet?
A)
I
B)
W
C)
H
D)
X

Correct Answer : Option (B) - W

Explanation : In the given alphabet, last but one letter of alphabet is Y.

10th letter to the left of Y is O

8th letter to the right of O is W

4 .
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

If the second half of the English alphabet is reversed then which letter will be 4th to the right of 20th letter from the right?
A)
E
B)
F
C)
K
D)
U

Correct Answer : Option (C) - K

Explanation : 4th to the right of 20th letter from the right means (20 - 4 =) 16th from the right.

16th letter from the right = (26 - 16 + 1 =) 11th from the left, i.e K

5 .
S L U A Y J V E I O N Q G Z B D R H

What will come in place of question (?) mark in the following series :

LA  UJ  YI  EG  ?
A)
ZH
B)
IB
C)
QH
D)
NR

Correct Answer : Option (C) - QH

Explanation : The first letter follows  +1, +2, +3, +4, ....

The second letter follows +2, +3, +4, +5,....

6 .
Arrange the words given below in a meaningful sequence.

1.Presentation  2.Recommendation  3. Arrival  4.Discussion  5.Introduction
A)
3, 5, 1, 4, 2
B)
3, 5, 4, 2, 1
C)
5, 3, 1, 2, 4
D)
5, 3, 4, 1, 2

Correct Answer : Option (A) - 3, 5, 1, 4, 2

Explanation : The correct order is :

3 - Arrival
5 - Introduction
1 - Presentation
4 - Discussion
2 - Recommendation

7 .
2 is to 55 as 6 is to
A)
109
B)
99
C)
59
D)
9

Correct Answer : Option (B) - 99

Explanation :

Given 2 is to 55
2 + 3 = 5 
5 x 11 = 55
Similarly, 6
6 + 3 = 9
9 x 11 = 99
Hence, 2 is to 55 as 6 is to 99.

8 .
Warm is to Hot as Not so Good is to
A)
Fair
B)
Worse
C)
Average
D)
Not so bad

Correct Answer : Option (B) - Worse

Explanation : Warm and hot are in the same meaning sense , so not so good is same as worse in meaning.

9 .
Next number in the number sequence is 22, 11, 33, 16.5, 49.5, ?
A)
20.75
B)
22.75
C)
24.75
D)
26.75

Correct Answer : Option (C) - 24.75

Explanation :

The given number series is 22, 11, 33, 16.5, 49.5, ?
 
22
22 / 2 = 11
11 x 3 = 33
33 / 2 = 16.5
16.5 x 3 = 49.5
49.5 / 2 = 24.75
Hence, the next number series is 24.75.

10 .
Choose the number pair/group which is different from others?
A)
15 : 46
B)
12 : 37
C)
10 : 15
D)
8 : 33

Correct Answer : Option (D) - 8 : 33

Explanation : In all other pairs, 2nd number = (1st number × 3) + 1.

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