Aptitude and Reasoning Questions

Q:

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases by 3 months. Find the age of the teacher.

A) 30 B) 25
C) 35 D) 40
 
Answer & Explanation Answer: B) 25

Explanation:
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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

Select the related word/letters/number from the given alternatives.
JS : QH : : VW : ?

A) HM B) PQ
C) JQ D) ED
 
Answer & Explanation Answer: D) ED

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Filed Under: Analogy
Exam Prep: Bank Exams

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Q:

The sum of length, breadth and height of a cuboid is 22 cm and the length of its diagonal is 14 cm.
If S is sum of the cubes of the dimensions of the cuboid and V is its volume, then what is (S-3V) equal to?

A) 572 cub.cm B) 728 cub.cm
C) 1144 cub.cm D) None of the above
 
Answer & Explanation Answer: C) 1144 cub.cm

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

If 3/4 of the weight of a brick is 7/8 kg, then 5/7 of the weight of the brick will be

A) 20/21 kg B) 5/6 kg
C) 5/8 kg D) 15/32 kg
 
Answer & Explanation Answer: B) 5/6 kg

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

In the given figure, two squares of sides 8 cm and 20 cm are given. What is the area (in sq.cm) of the shaded part?

A) 120/7 B) 160/7
C) 180/7 D) 240/13
 
Answer & Explanation Answer: B) 160/7

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

At what rate of compound interest per annum will a sum of Rs 50000 become Rs 73205 in 2 years?

A) 21 percent B) 19 percent
C) 17 percent D) 15 percent
 
Answer & Explanation Answer: A) 21 percent

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

If ab+c=bc+a=Cb+athen which one of the following statements is correct?

A) Each fraction is equal to 1 or -1 B) Each fraction is equal to 1/2 or 1
C) Each fraction is equal to 1/2 or -1 D) Each fraction is equal to 1.2 only
 
Answer & Explanation Answer: C) Each fraction is equal to 1/2 or -1

Explanation:

a/(b+c) = b/(c+a) = c/(a+b)

Taking reciprocal and adding 1 to each ratio we get;

(b+c)/a + 1 = b/(c+a) + 1 = c/(a+b) + 1

Or (a+b+c)/a = (a+b+c)/b = (a+b+c)/c

So this can only be equal when a=b=c or a+b+c = 0

When a=b=c we get

a/(b+c)= ½When a+b+c = 0 we get

b+c = -a

So a/(b+c) = -1

So the ratios are ½ or -1

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If the expression px3  qx2  7x  6 is completely divisible by x2  x  6, then what is the value of p and q respectively?

A) 0, 1 B) 1, 0
C) 2, 1 D) 1, 2
 
Answer & Explanation Answer: B) 1, 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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