Aptitude and Reasoning Questions

Q:

The size of the wooden block is 5 x 10 x 20 cm .How many such blocks will be required to construct a solid wooden cube of minimum size? 

A) 6 B) 8
C) 12 D) 16
 
Answer & Explanation Answer: B) 8

Explanation:

Side of smallest cube = L.C.M of 5, 10, 20 = 20cm  

Volume of the cube = (20 x 20 x 20)cu.cm = 8000 cu.cm  

Volume of the block= (5 x 10 x 20)cu.cm = 1000 cu.cm  

Number of blocks = (8000/1000) = 8

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams
Job Role: Bank PO

35 19654
Q:

Read the following statement and the arguments that follow. Decide which of the arguments is strong.


Statement:
Should written examination in primary schools be abolished?


Arguments:
1. Yes, young students feel the burden and such examinations do not help in the natural thinking process.
2. No, without examination students will not be serious about education and learning.

A) Both arguments I and 2 are strong B) Only argument I is strong
C) Neither argument 1 nor 2 is strong D) Only argument 2 is strong
 
Answer & Explanation Answer: A) Both arguments I and 2 are strong

Explanation:
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Filed Under: Statement and Conclusions
Exam Prep: AIEEE , Bank Exams , CAT

0 19643
Q:

Find the area of a triangle whose sides measure 13 cm, 14 cm and 15 cm.

A) 84 B) 64
C) 44 D) 22
 
Answer & Explanation Answer: A) 84

Explanation:

Let a = 13, b = 14 and c = 15. Then, s=12a+b+c=21

 (s- a) = 8, (s - b) = 7 and (s - c) = 6.


Area =ss-as-bs-c =21×8×7×6 = 84 sq.cm   

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

40 19641
Q:

A 3 by 4 rectangle is inscribed in circle. What is the circumference of the circle?

A) 2.5π B) 3π
C) 5π D) 4π
 
Answer & Explanation Answer: C) 5π

Explanation:

Draw the diagram. The diagonal of the rectangle is the diameter of the circle. The diagonal is the hypotenuse of a 3,4,5 triangle and is therefore, 5.

 

Circumference = π.diameter = 5π

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Filed Under: Area
Exam Prep: GRE

8 19638
Q:

Based on figures A and C, select the option that can replace the question mar in figure B.

 

 

 

A) 37 B) 39
C) 41 D) 47
 
Answer & Explanation Answer: C) 41

Explanation:
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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

2 19623
Q:

A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present ?

A) 36 yrs B) 38 yrs
C) 40 yrs D) 42 yrs
 
Answer & Explanation Answer: C) 40 yrs

Explanation:

Let the mother's present age be x years.

Then, the person's present age = 2/5 x years.

(2x/5 + 8) = 1/2 (x + 8)

2(2x + 40) = 5(x + 8) => x = 40.

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Filed Under: Problems on Ages
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

26 19610
Q:

In a certain code, '247' means 'spread red carpet' ; '256' means 'dust one carpet' and '234' means 'one red carpet'. Which digit in that code means 'dust' ?

A) 2 B) 3
C) 5 D) 6
 
Answer & Explanation Answer: C) 5

Explanation:

In the first and second statements, the common code digit is '2' and the common word is 'carpet'.

 

So, '2' means 'carpet'.

In the second and third statements, the common code digit is '6' and the common word is 'one'.

 

So, '6' means 'one'.
Therefore, in the second statement, '5' means 'dust'.

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Filed Under: Coding and Decoding

95 19600
Q:

A person sold two cows each for Rs.9900. If he gained 10% on one and lost 20% on the other, then which of the following is true?

A) He Gained Rs. 200 B) He lost Rs. 200
C) He neither gained nor lost D) None of the above
 
Answer & Explanation Answer: D) None of the above

Explanation:

The CP of profitable cow  = 9900/1.1 = 9000

 

and profit = Rs. 900

 

The  CP of loss yielding cow = 9900/0.8 = 12375

 

and loss = Rs. 2475

 

so, the net loss = 2475 - 900 = 1575

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

26 19569