Aptitude and Reasoning Questions

Q:

In a class there were 28 boys and some girls. In a test the mean score obtained by the boys was 12.5 while that obtained by the girls was 14.5. If the overall average was 13.1, what was the total number of students in the class?

A) 42 B) 44
C) 40 D) 38
 
Answer & Explanation Answer: C) 40

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

The selling price of an article is Rs 816 if the discount on it is 15%. What would be the selling price of the article (in Rs) if the discount on it is 25%?

A) 750 B) 720
C) 800 D) 700
 
Answer & Explanation Answer: B) 720

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

In the given figure, PQRS is a quadrilateral. If QR = 18 cmand PS = 9 cm,then what is the area (in sq. cm) of quadrilateral PQRS?

A) (64√3)/3 B) (177√3)/2
C) (135√3)/2 D) (98√3)/3
 
Answer & Explanation Answer: C) (135√3)/2

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

Select the odd word from the given alternatives

A) Carrot B) Brinjal
C) Radish D) Beet
 
Answer & Explanation Answer: B) Brinjal

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Q:

Two equal circles intersect such that each passes through the centre of the other. If the length of the common chord of the circles is 10√3 cm, then what is the diameter of the circle?

A) 10 cm B) 15 cm
C) 20 cm D) 30 cm
 
Answer & Explanation Answer: C) 20 cm

Explanation:

Let there be 2 circles with centre O1 and OAB is the common chord

Since both passes through the center of each other as shown in figure

So O1O is the radius of both

Let O1O = r = AO1= AO

AX = AB / 2 = 5√3 cm (since OX perpendicular to chord bisects it)

AOO1 forms an equilateral triangle with on side = radius = r

Sin 60 = √3/2 = AX / AO = 5√3/r

So r = 10 cm

So diameter = 20 cm

 

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A person lent certain sum of money at 10% per annum simple interest. In 20 years the interest amounted to Rs 500 more than the sum lent. What was the sum lent (in Rs)?

A) 200 B) 500
C) 1000 D) 250
 
Answer & Explanation Answer: B) 500

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

Giving two successive discounts of 20% is same as giving one discount of ________ %.

A) 36 B) 40
C) 44 D) 50
 
Answer & Explanation Answer: A) 36

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Filed Under: Percentage
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Q:

If 15@7=44; 5@4=18; 6@17=46; then what is the value of 17@4=?

A) 36 B) 42
C) 40 D) 49
 
Answer & Explanation Answer: B) 42

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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