Aptitude and Reasoning Questions

Q:

What is the value of (81 + 82 + 83 + ......... +130)?

A) 5275 B) 10550
C) 15825 D) 21100
 
Answer & Explanation Answer: A) 5275

Explanation:
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Filed Under: Numbers
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Q:

There is a square field of area ‘X’ square meters. A cylindrical ditch of radius 7 meters and depth 2 meters is dug, and the earth is taken out and spread over the remaining part of the square field, the height of square field which goes up by 0.77 meters. What is the value of ‘X’ ? 

A) 548 sq. m B) 524 sq. m
C) 518 sq. m D) 554 sq. m
 
Answer & Explanation Answer: D) 554 sq. m

Explanation:

Volume of the cylindrical ditch = πrxrh = 22/7 ×7×7×2 = 308 sq.m

Area of remaining field = (X −πrxr) sq.m

= (X − 154)

ATQ –

(X – 154) ×0.77 = 308

(X – 154) = 400

X= 554 sq.m

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Filed Under: Area
Exam Prep: AIEEE , Bank Exams

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Q:

What is the product of a number and its reciprocal?

A) 0 B) 1
C) -ve of the number D) the number itself
 
Answer & Explanation Answer: B) 1

Explanation:

The product of a number and its reciprocal is always equals to 1.

 

For Example : Let the number be 4.

Now, its reciprocal is 1/4

Hence, required product = 4 x 1/4 = 1.

 

Now, take the number as -15.

Then its reciprocal is -1/15

Required product = -15 x -1/15 = 1.

 

Hence, the product of a number and its reciprocal is 1.

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Filed Under: Arithmetical Reasoning
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Q:

Karan remembers that his sister's birthday is not after 18th August. Karan's mother remembers that Karan's sister birthday is before 20th August but after 17th August. On which date of August is Karan's sister birthday?

A) 18 B) 17
C) 19 D) 20
 
Answer & Explanation Answer: A) 18

Explanation:
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Filed Under: Calendar
Exam Prep: Bank Exams

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Q:

G is twice as fast as S in doing work. If G can do a work in 30 days less than S, how many days will they take to complete the work together?

A) 25 B) 20
C) 22 D) 15
 
Answer & Explanation Answer: B) 20

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

A water tank has holes. The 1st hole alone empties the tank in 9 min and 2nd hole alone empties the tank in 6 min. If water leaks out at a constant rate, how many min does it take if both the holes together empty the tank?

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

Explanation:
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Filed Under: Pipes and Cistern
Exam Prep: Bank Exams

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Q:

If 3x + 2y = 7 and 4x - y = 24, then x - y = ______.

A) 9 B) 1
C) -9 D) -1
 
Answer & Explanation Answer: A) 9

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In a certain code language, "CUTE" is written as "9251" and "REST" is written as "4135". How is "RESCUE" written in that code language?

A) 413921 B) 431291
C) 423911 D) 413912
 
Answer & Explanation Answer: A) 413921

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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