Aptitude and Reasoning Questions

Q:

Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?

A) 8 B) 9
C) 7 D) 6
 
Answer & Explanation Answer: B) 9

Explanation:

Number of students who took only Mathematics n(m) = 29
Number of students who took only biology n(b) = 32
Total number of students n(t) = 60
Total number of students of both mathematics and biology n(m b) = 60 - 8 = 52
Total number of students who took both = 32 + 29 - 52 = 9

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Exam Prep: AIEEE , Bank Exams , CAT

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Q:

The angle of elevation of the top of a tower from two horizontal points (in opposite sides) at distances of 25 meter and 64 meter from the base of tower are x and 90° - x respectively . The height of the tower will be

A) 39 m B) 89 m
C) 1.6 m D) 40 m
 
Answer & Explanation Answer: D) 40 m

Explanation:
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Q:

P is S's mother's only son's wife. How is P related to S?

A) Daughter-in-law B) Mother-in-law
C) Sister-in-law D) Sister
 
Answer & Explanation Answer: C) Sister-in-law

Explanation:
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Filed Under: Blood Relations
Exam Prep: Bank Exams

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Q:

The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how much Zubeida score in any one of the remaining three tests to still have a chance to match Raghav's performance?

A) 21 B) 22
C) 20 D) 19
 
Answer & Explanation Answer: A) 21

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams , CAT

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Q:

There is 40% increase in an amount in 10 years at simple interest. What will be the compound interest of Rs. 30000 after 3 years at the same rate?

A) Rs 3745.92 B) Rs 7491.84
C) Rs 9364.8 D) Rs 5618.88
 
Answer & Explanation Answer: A) Rs 3745.92

Explanation:
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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

What is the value of sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D)?

A) 3/2 B) – 3
C) 1 D) 0
 
Answer & Explanation Answer: D) 0

Explanation:
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Exam Prep: Bank Exams

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Q:

If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?

A) 18.25 percent B) 22 percent
C) 38.88 percent D) 28 percent
 
Answer & Explanation Answer: C) 38.88 percent

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

What is the reflection of the point (5, 3) in the line y = -2?

A) (-9 , 3) B) (-5 , -7)
C) (-9 , -3) D) (5 , -7)
 
Answer & Explanation Answer: D) (5 , -7)

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

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