Aptitude and Reasoning Questions

Q:

Sum of cubes of first n even natural numbers.

Answer

Proof of Sum of cubes of first n even natural numbers ::


sum_of_cubes_of_first_n_even_natural_numbers1556603651.png image


 


Hence, in other words, the sum of the first n cubes is the square of the sum of the first n natural numbers.

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Subject: Simplification Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

If A : B = 2 : 5, B : C = 4 : 3 and C : D = 2 : 1, then what is value of A : C : D?

A) 6 : 5 : 2 B) 7 : 20 : 10
C) 8 : 30 : 15 D) 16 : 30 : 15
 
Answer & Explanation Answer: D) 16 : 30 : 15

Explanation:
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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

A rice trader buys 16 quintals of rice for Rs 5632. 20% rice is lost in transportation. At what rate should he sell to earn 25% profit?

A) Rs 225.2 per quintal B) Rs 550 per quintal
C) Rs 440 per quintal D) Rs 563.2 per quintal
 
Answer & Explanation Answer: B) Rs 550 per quintal

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

If 27% of an electricity bill is deducted, Rs 1825 is still to be paid. How much was the bill?

A) Rs 1437 B) Rs 2536
C) Rs 2500 D) Rs 1473
 
Answer & Explanation Answer: C) Rs 2500

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

In a certain code, "go home" is written as "ta na" and "nice little home" is written as "na ja pa". How is "go" written in that code?

A) ta B) na
C) ja D) na or ta
 
Answer & Explanation Answer: A) ta

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

A is taller than B. C is taller than A. D is taller than E but shorter than B. Who is the tallest?

A) C B) A
C) D D) B
 
Answer & Explanation Answer: A) C

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

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Q:

Which of the following is a compound sentence?

A) We can go see a movie, or we can get something to eat. B) When you get there, please remember to call me.
C) Mohan bought some new shoes and wore them to a party. D) None of the above
 
Answer & Explanation Answer: A) We can go see a movie, or we can get something to eat.

Explanation:

A compound sentence is a sentence that has at least two independent clauses joined by a comma, semicolon or conjunction. An independent clause is a clause that has a subject and verb and forms a complete thought.

Here except option A) other two options dependent.

 

Hence, A) We can go see a movie, or we can get something to eat is a compound sentence.

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Q:

If 1-5=5, 47=-28 and -1-3=-3, then find the value of 8-8 =?

A) 64 B) -48
C) 45 D) 74
 
Answer & Explanation Answer: A) 64

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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