Aptitude and Reasoning Questions

Q:

50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 cu.m , then the rise in the water level in the tank will be:

A) 20 cm B) 25 cm
C) 35 cm D) 50 cm
 
Answer & Explanation Answer: B) 25 cm

Explanation:

Total volume of water displaced =(4 x 50) cu.m = 200 cu.m

 

Rise in water level = 20040×20=0.25m = 25cm

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63 50732
Q:

 

If three groups could be formed using the given figures only once, these groups would be ___.

 

A) (9,3,6), (2,5,7) and (1,4,8) B) (8,3,6), (2,4,7) and (1,5,9)
C) (9,3,7), (2,4,6) and (1,5,8) D) (9,3,6), (2,4,7) and (1,5,8)
 
Answer & Explanation Answer: D) (9,3,6), (2,4,7) and (1,5,8)

Explanation:
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8 50723
Q:

In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?

A) 360 B) 700
C) 720 D) 120
 
Answer & Explanation Answer: C) 720

Explanation:

The word 'OPTICAL' contains 7 different letters.

When the vowels OIA are always together, they can be supposed to form one letter.

Then, we have to arrange the letters PTCL (OIA).

Now, 5 letters can be arranged in 5! = 120 ways.

The vowels (OIA) can be arranged among themselves in 3! = 6 ways.

Required number of ways = (120 x 6) = 720.

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51 50721
Q:

A number is decreased by 10% and then increased by 10%.  The number so obtained is 10 less than the original number. What was the oiginal number ? 

A) 1000 B) 2000
C) 3000 D) 4000
 
Answer & Explanation Answer: A) 1000

Explanation:

Let the original number be x.

 

Final number obtained = 110% of (90% of x) =(110/100 * 90/100 * x) = (99/100)x. 

 

x-(99/100)x=10

=> x =1000

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Filed Under: Percentage

141 50699
Q:

Exhibit : display :: send : ?

A) Stamp B) Receive
C) Show D) Emit
 
Answer & Explanation Answer: D) Emit

Explanation:

Here the given words represent synonyms.

Exhibit and Display are synonyms for each other. Similarly, Send and Emit are synonyms for each other.

 

Hence, Exhibit : display :: send : Emit.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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93 50687
Q:

Compute of 29292 x 9999 = ?

 

 

A) 222890708  B) 298290708 
C) 292809708  D) 292890708
 
Answer & Explanation Answer: D) 292890708

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 50640
Q:

If 20 men can build a wall 56 meters long in 6 days , what length of  a similar wall can be  built by 35 men in 3 days?

A) 46 B) 47
C) 48 D) 49
 
Answer & Explanation Answer: D) 49

Explanation:

Let the required length be x meters

 More men, More length built     (Direct proportion) 

Less days, Less length built      (Direct Proportion)

Men20:35Days6 : 3 56 :x 

=> (20 x 6 x X)=(35 x 3 x 56) 

=> x = 49 

Hence, the required length is 49 m.

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Filed Under: Chain Rule

155 50526
Q:

Arrange the words given below in a meaningful sequence.

1. Heel  2. Shoulder  3. Skull  4. Neck  5. Knee  6. Chest  7. Thigh  8. Stomach  9. Face  10. Hand

A) 3, 4, 7, 9, 2, 5, 8, 10, 6, 1 B) 3, 9, 4, 2, 10, 6, 8, 7, 5, 1
C) 2, 4, 7, 10, 1, 5, 8, 9, 6, 3 D) 4, 7, 10, 1, 9, 6, 2, 5, 8, 3
 
Answer & Explanation Answer: B) 3, 9, 4, 2, 10, 6, 8, 7, 5, 1

Explanation:

The correct order is :

Skull  Face  Neck  Shoulder  Hand  Chest  Stomach  Thigh  Knee  Heel

     3        9        4           2            10          6            8             7         5          1

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33 50500