Aptitude and Reasoning Questions

Q:

If (1 × 2 × 3 × 4 ........ × n) = n!, then 15! - 14! - 13! is equal to ___?

A) 14 × 13 × 13! B) 15 × 14 × 14!
C) 14 × 12 × 12! D) 15 × 13 × 13!
 
Answer & Explanation Answer: D) 15 × 13 × 13!

Explanation:

15! - 14! - 13!

= (15 × 14 × 13!) - (14 × 13!) - (13!)

= 13! (15 × 14 - 14 - 1)

= 13! (15 × 14 - 15)

= 13! x 15 (14 - 1)

= 15 × 13 × 13!

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Filed Under: Permutations and Combinations
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

[(24)2+(27)2]÷? = 9.0625

A) 121 B) 144
C) 169 D) 81
 
Answer & Explanation Answer: B) 144

Explanation:
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4 4842
Q:

Consider the given statement and decide which of the given assumptions is/are implicit.

Statement :
Shyam tells Gita, " The ways to reach Sri Lanka is through air and water".

 

Assumptions:
1. Gita likes to travel to Sri Lanka.
2. Shyam is fond of advising people.

 

A) Both assumptions 1 and 2 are implicit B) Neither assumption 1 nor 2 is implicit
C) Only assumption 2 is implicit D) Only assumption 1 is implicit
 
Answer & Explanation Answer: B) Neither assumption 1 nor 2 is implicit

Explanation:
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Filed Under: Statement and Assumptions
Exam Prep: Bank Exams

0 4841
Q:

Choose the correct figure that can replace the question mark.

 

 

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

Explanation:
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Filed Under: Pattern Completion
Exam Prep: Bank Exams

1 4840
Q:

Laxmi and Prasanna set on a journey. Laxmi moves northwards at a speed of 20kmph and Prasanna moves southward at a speed of 30 kmph. How far will be Prasanna from Laxmi after 60 minutes ?

A) 24 km B) 50 km
C) 42 km D) 30 km
 
Answer & Explanation Answer: B) 50 km

Explanation:

We know 60 min = 1 hr
Total northward Laxmi's distance = 20kmph x 1hr = 20 km
Total southward Prasanna's distance = 30kmph x 1hr = 30 km
Total distance between Prasanna and Laxmi is = 20 + 30 = 50 km.

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Filed Under: Time and Distance
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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3 4839
Q:

Which of the following cube in the answer figure cannot be made based on the unfolded cube in the question figure?

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

Explanation:
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Filed Under: Cubes and Dice
Exam Prep: Bank Exams

3 4838
Q:

If - means ÷ , + means x , ÷ means - , x means +, then which of the following equations is correct?

A) 43 x 7 ÷ 5 + 4 - 8 = 25 B) 48 ÷ 5 + 8 x 10 - 2 = 03
C) 36 x 4 - 12 + 5 ÷ 3 = 420 D) 42 + 5 ÷ 6 x 8 - 3 = 28
 
Answer & Explanation Answer: B) 48 ÷ 5 + 8 x 10 - 2 = 03

Explanation:
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Filed Under: Coding and Decoding

3 4837
Q:

Simplify: b-[b-(a+b)-{b-(b-a-b)}+2a]

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

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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