Aptitude and Reasoning Questions

Q:

In a certain code ARCHIVE is written as DSBGFWJ. How is SYSTEMS is written in that code ?

A) TZTSTUN B) TZTSTNF
C) TZTUTNF D) TZTNTFS
 
Answer & Explanation Answer: B) TZTSTNF

Explanation:

ARC -> CRA ->(+1) DSB
    H ->     H ->(-1) G
IVE  ->  EVI ->(+1) FWJ

 Similarly,

 SYS -> SYS ->(+1) TZT
    T ->     T ->(-1) S
EMS -> SME ->(+1) TNF

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Filed Under: Alphabet Test
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18 11244
Q:

Find out the wrong term in the series 3, 7, 15, 39, 63, 127, 255, 511

A) 39 B) 255
C) 127 D) 63
 
Answer & Explanation Answer: A) 39

Explanation:

The correct pattern is *2+1
So, 39 is wrong and must be replaced by (15 * 2 + 1) = 31

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Filed Under: Number Series

21 11239
Q:

Sullen is to moody as monotonous is to what

A) Repetitious B) Attractive
C) Drab D) Varied
 
Answer & Explanation Answer: A) Repetitious

Explanation:

Here the given words, sullen and moody are synonyms to each other which means that gloomy, resentful. Similarly, repetitious and monotonous are synonyms to each other which means dull, tedious.

 

Hence, Sullen : moody :: monotonous : repetitious.

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Filed Under: Analogy
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8 11230
Q:

Select from the five alternative diagrams, the one that best illustrates the relationship among the three classes  :  Truck, Ship, Goods

A) 1 B) 3
C) 4 D) 5
 
Answer & Explanation Answer: B) 3

Explanation:

Truck and Ship are entirely different. But some Goods are carried by some Trucks and some Goods are carried by some Ships.

 

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Filed Under: Logical Venn Diagram

139 11225
Q:

Find out the wrong term in the series 125, 126, 124, 127, 123, 129

A) 129 B) 125
C) 127 D) 123
 
Answer & Explanation Answer: A) 129

Explanation:

The correct pattern is +1, -2, +3, -4, +5, . . . .
So,129 wrong and must be replaced by 123 + 5 = 128

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Filed Under: Number Series

17 11217
Q:

A coin is tossed twice if the coin shows head it is tossed again but if it shows a tail then a die is tossed. If 8 possible outcomes are equally likely. Find the probability that the die shows a number greater than 4, if it is known that the first throw of the coin results in a tail

A) 1/3 B) 2/3
C) 2/5 D) 4/15
 
Answer & Explanation Answer: A) 1/3

Explanation:

Here Sample space S = { HH, HT, T1, T2, T3, T4, T5, T6 }

 

Let A be the event that the die shows a number greater than 4 and B be the event that the first throw of the coin results in a tail then,

 

 A = { T5, T6 }

 

 B = { T1, T2, T3, T4, T5, T6 }

 

Therefore, Required probability = PAB=PABPB=2868=13

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Filed Under: Probability

15 11203
Q:

The average of the two-digit numbers, which remain the same when the dibits inter-change their positions, is :

A) 53 B) 54
C) 55 D) 56
 
Answer & Explanation Answer: C) 55

Explanation:

Average = (11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 99) / 9

             =( (11 + 99) + (22 + 88) + (33 + 77) + (44 + 66) + 55) / 9

             = (4 * 110 + 55)/9 =  495 / 9 = 55. 

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Filed Under: Average

10 11198
Q:

If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area?

A) 41% B) 38%
C) 33% D) 44%
 
Answer & Explanation Answer: B) 38%

Explanation:

% Change in Curved Surface Area is given by 

%Change in radius + %Change in height + %Change in radius × %Change in height 100  

+20 + 15 + 20×15100 = 38%

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Filed Under: Volume and Surface Area
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