Aptitude and Reasoning Questions

Q:

An unbiased die is rolled. Find the probability of getting a multiple of 3?

A) 1/6 B) 1/3
C) 5/6 D) None of these
 
Answer & Explanation Answer: B) 1/3

Explanation:

S = { 1, 2, 3, 4, 5, 6 } 

=> n(S) = 6

E = { 3, 6}

=> n(E) = 2

Therefore, P(E) = 2/6 =1/3

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Filed Under: Probability

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Q:

60 percent of 2/7 of three-fourth of a number is 2664. What is the number ?

A) 20720 B) 21352
C) 25421 D) 24150
 
Answer & Explanation Answer: A) 20720

Explanation:

Let N be the required number. 

=> 60100x27x34xN=2664  

=> N = 2664x2x7x5/9  

=> N = 20720.

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Filed Under: Percentage
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10 5707
Q:

What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?

A) 8 hrs B) 7 hrs 15 min
C) 7 hrs 30 min D) 8 hrs 20 min
 
Answer & Explanation Answer: C) 7 hrs 30 min

Explanation:

Total number of cards = 1500
total columns = 45
so, total punches=1500 x 45 = 67500
for 1 hour if we make 9000 punches,
we require 67500/9000 = 7.5
so 7hours:30mins.

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Filed Under: Arithmetical Reasoning
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1 5700
Q:

Synonym for the word : Bleak

A) bare B) lush
C) warm D) verdant
 
Answer & Explanation Answer: A) bare

Explanation:

Bleak means an area of land lacking vegetation and exposed to the elements like deserts.

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Filed Under: Analogy
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16 5699
Q:

In the following question, a matrix of certain characters is given.These characters follow a certain trend, row-wise or column wise.Find out this trend and choose the missing character accordingly.

28 60 48
5 6 7
17 30 7
7 ? 16

A) 18 B) 23
C) 24 D) 27
 
Answer & Explanation Answer: D) 27

Explanation:

 The number in the second column is three times the difference between the numbers in the third and first columns.
So, missing number = 3 x ( 16 - 7 ) = 3 x 9 = 27.

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107 5688
Q:

Nautilus : Fish :: Teal : ?

A) Duck B) Pigeon
C) Dolphin (c)Duck (d)Pigeon D) Chicken
 
Answer & Explanation Answer: A) Duck

Explanation:

Nautilus is a type of fish and teal is a type of duck.

 

Hence, Nautilus : Fish :: Teal : Duck.

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Filed Under: Analogy
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4 5687
Q:

One card is drawn from a pack of 52 cards, each of the 52 cards being equally likely to be drawn find the probability the card drawn is red.

A) 2/3 B) 1/2
C) 1/52 D) 13/51
 
Answer & Explanation Answer: B) 1/2

Explanation:

We know that:

When one card is drawn from a pack of 52 cards

The numbers of possible outcomes n(s) = 52

We know that there are 26 red cards in the pack of 52 cards
⇒ The numbers of favorable outcomes n(E) = 26

Probability of occurrence of an event: P(E)=Number of favorable outcomes/Numeber of possible outcomes=n(E)/n(S)

∴ required probability = 26/52 = 1/2.

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Q:

If x = √8 - √7, y = √6 - √5 and z = √10 - 3, which of the following is true  ?

A) x > y < z B) x < y < z
C) x > y > z D) z < x < y
 
Answer & Explanation Answer: D) z < x < y

Explanation:

x = √8 - √7 = 1/(√8 + √7) and y = √6 - √5 = 1/(√6 + √5) and z = √10 - 3 = 1/(√10 + 3)

As (√8 + √7) > (√6 + √5), (√8 - √7) < (√6 - √5)

As (√10 + 3) > (√8 + √7) > (√6 + √5)

z < x < y.

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Filed Under: Arithmetical Reasoning
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