Aptitude and Reasoning Questions

Q:

cos3A is equal to

A) cos3A - 3sin2cosA B) cos3A + 4sin2cosA
C) cos3A + 3sin2cosA D) cos3A - 4sin2cosA
 
Answer & Explanation Answer: C) cos3A + 3sin2cosA

Explanation:
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Filed Under: Simplification
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Q:

If pq(p+q) = 1, then the value of 1p3q3-p3-q3 is equal to

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

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Q:

Sandy and Mandy do (8/13)th part of a work and the rest of the work was completed by Andy. If Sandy, Mandy and Andy take the same work for Rs. 2600, then what is the share (in Rs) of Andy?

A) 1600 B) 1400
C) 800 D) 1000
 
Answer & Explanation Answer: D) 1000

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

3/8 as a decimal

A) 1.375 B) 2.375
C) 0.375 D) 3.75
 
Answer & Explanation Answer: C) 0.375

Explanation:

Expressing 3/8 as a decimal fraction:

We can convert 3/8 into a decimal fraction by just dividing 3 by 8 or making 3 into 8 parts.

Then, it is 3/8 = 0.375 as a decimal fraction.

 

Other Method::

3/8 as a Decimal :

In this we should convert the denominator into 10, 100, 1000, 10000, 100000,... to make it simple.

Now to make 8 into 1000, we multiply numerator and denominator with 125

 

=> (3 x 125)/(8 x 125) = 375/1000 = 0.375.

 

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Q:

Rahul's age is three times the age of Sumit. If Rahul is 15 years old presently, determine the age (in years) of Sumit after 12 years.

A) 16 B) 15
C) 10 D) 17
 
Answer & Explanation Answer: D) 17

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

If "–" means "added to", "+" means "divided by", "÷" means "multiplied by", "x" means "subtracted from", then 13 + 12 x 9 ÷ 3 – 6 = ?

A) –117/11 B)  117/11
C) –237/12 D) –239/12
 
Answer & Explanation Answer: D) –239/12

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Filed Under: Mathematical Operations
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Q:

1.1 + 12.12 + 123.123 = ?

A) 134.343 B) 133.433
C) 132.123 D) 136.343
 
Answer & Explanation Answer: D) 136.343

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Filed Under: Problems on Numbers
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Q:

A shopkeeper by selling 20 Timex watches, earns a profit equal to the selling price of 4 Timex watches. His profit percentage is

A) 20 percent B) 25 percent
C) 30 percent D) 50 percent
 
Answer & Explanation Answer: B) 25 percent

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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