Aptitude and Reasoning Questions

Q:

The standard deviation of the set {10, 10, 10, 10, 10} is

A) 0 B) 1
C) 5 D) 10
 
Answer & Explanation Answer: A) 0

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Q:

If A = 232, B = 231+ 230+ 229+ ... + 20and C = 315+ 314+ 313+ ... + 30, then which of the following option is TRUE?

A) C > B > A B) C > A > B
C) A > B > C D) A > C > B
 
Answer & Explanation Answer: B) C > A > B

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Q:

A rectangular red carpet of size 6 ft ×12 ft has a dark red border 6 inches wide. What is the area of the dark red border?

 

A) 9 square feet B) 15 square feet
C) 17 square feet D) 18 square feet
 
Answer & Explanation Answer: C) 17 square feet

Explanation:
Initially carpet is 6×12 = 72 sq feet
Since red border is 6 inches wide from all 4 side
So area without border = 5× 11 = 55 sq feet
Area of border = total–area without border = 72–55 = 17 sq feet
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Filed Under: Volume and Surface Area
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Q:

Choose a figure which would most closely resemble the unfolded form of Figure (Z).

A) A B) B
C) C D) D
 
Answer & Explanation Answer: D) D

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Filed Under: Paper Cutting

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Q:

Priya's marks in History and Geography are in the ratio 5 : 7. If she got 14 marks more in Geography than in History, what are her History marks?

A) 49 B) 42
C) 56 D) 35
 
Answer & Explanation Answer: D) 35

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Filed Under: Ratios and Proportions
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Q:

In triangle PQR, C is the centroid. PQ = 30 cm, QR = 36 cm and PR = 50 cm. If D is the midpoint of QR, then what is the length (in cm) of CD?

A) (4√86)/3 B) (2√86)/3
C) (5√86)/3 D) (5√86)/2
 
Answer & Explanation Answer: A) (4√86)/3

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Filed Under: Area
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Q:

If each median of an equilateral triangle has a length of 12cm. Then what will be the value of in-radius (in cm) of the equilateral triangle?

A) 3 B) 4
C) 5 D) 6
 
Answer & Explanation Answer: B) 4

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Filed Under: Simplification
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Q:

A can do 75% of a job in 18 days and B can do 25% of the job in 12 days. If they work on it together, in how many days can they do 75% of the job?

A) 16 B) 8
C) 20 D) 12
 
Answer & Explanation Answer: D) 12

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Filed Under: Time and Work
Exam Prep: Bank Exams

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