Mental Ability - Questions

1 .
Horse : Jockey :: Car : ?
A)
Brake
B)
Mechanic
C)
Steering
D)
Chauffeur

Correct Answer : Option (D) - Chauffeur

Explanation :

A horse is driven by a jockey.
 
Similarly, a car is driven by a chauffeur.

2 .
The sum of three consecutive multiples of 3 is 72. What is the second largest number ?
A)
24
B)
27
C)
35
D)
49

Correct Answer : Option (A) - 24

Explanation :

Let the numbers be 3x, 3x + 3 and 3x + 6.
Then,
3x + (3x + 3) + (3x + 6) = 72
9x = 63
x = 7
Largest number = 3x + 6 = 27.
 
=> Second largest number = 27 - 3 = 24

3 .
What will come in the place of the (?) in the following number series ?
 
5 14 45 130 (?) 1182
A)
222
B)
397
C)
421
D)
543

Correct Answer : Option (B) - 397

Explanation :

The pattern of given series is :
 
5
14 = (5x3) - 1
45 = (14x3) + 3
130 = (45x3) - 5
(?) = (130x3) + 7
=> (?) = 397
1182 = (397x3) - 9
 
Thus, the missing number is 397.

4 .
If in a certan language FASHION is coded as FOIHSAN, how is PROBLEM codedin that code?
A)
RPBOELM
B)
RPOBELM
C)
PELBORM
D)
PRBOELM

Correct Answer : Option (C) - PELBORM

Explanation : The first and the last letters of the word remain as such and the remaining letters are written in a reverse order, to obtain the code.

5 .
What is the number that should come in the place of question mark ? 1050 420 168 67.2 ?
A)
10.752
B)
14.25
C)
26.88
D)
32.47

Correct Answer : Option (C) - 26.88

Explanation :

Given series follows the rule of
 
1050/2.5 = 420
420/2.5 = 168
168/2.5 = 67.2
so 67.2/2.5 = 26.88

6 .
Find out the wrong term in the series 2, 5, 10, 50, 500, 5000
A)
10
B)
20
C)
500
D)
5000

Correct Answer : Option (D) - 5000

Explanation :

Each term of the series is the product of the preceding two terms
So, 5000 is wrong and it must be replaced by (500*50) = 25000

7 .
34 is related to 12 in the same way as 59 is related to
A)
45
B)
38
C)
25
D)
12

Correct Answer : Option (A) - 45

Explanation : The second number is the product of the digits of the first.

8 .
The solution of 3(2u + v) = 7 uv and 3(u + 3v) = 11 uv is _____
A)
u = 1, v = 0
B)
u = 1, v = 3/2
C)
u = 0, v = 1
D)
u = 0, v = 3/4

Correct Answer : Option (B) - u = 1, v = 3/2

Explanation :

Using Trial and error method,
 
From the options  u = 1, v = 3/2 satisfies both the equations.

9 .
Man : Biography :: Nation : ?
A)
Nationalism
B)
Leader
C)
Story
D)
History

Correct Answer : Option (D) - History

Explanation :

Detailed description of a man's life is Biography.
 
Similarly, detailed description of a Nations is called History.

10 .
Roja's mother is the only daughter of Archana's father. How is Archana's husband related to Roja ?
A)
Brother
B)
Uncle
C)
Father
D)
Grandfather

Correct Answer : Option (C) - Father

Explanation :

Clearly, the only daughter or Archana's father is Archana herself 
 
So, Roja's mother is Archana
 
Thus, Archana's husband is the father of Roja.

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