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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

What is the value of Sin 30° - Cosec 45°?

A) (2√6 - 1)/√3 B) (1 - 2√3)/2
C) (√2 - √3)/√6 D) (1 - 2√2)/2
 
Answer & Explanation Answer: D) (1 - 2√2)/2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

A sum of Rs 6000 becomes Rs 7200 in 2 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 3 years?

 

A) 7434   B) 8244  
C) 7864   D) 7986
 
Answer & Explanation Answer: D) 7986

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

What is the value of Tan 45° - 1/√3 Sec 60°?

A) (1 - 2√3)/2 B) (√2 - √3)/√6
C) (3 - 2√3)/3 D) (1 - 2√2)/2
 
Answer & Explanation Answer: C) (3 - 2√3)/3

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The value of x for which the expressions 5x + 17 and 17x - 5 become equal is _____.

A) 11/6 B) -11/6
C) 6/11 D)  -6/11
 
Answer & Explanation Answer: A) 11/6

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Which of the following questions is a statistical question?

A) Where do the professional sports leagues play?   B) How many professional sports leagues are there?
C) How many hours do the student-athletes at your school spend each week training for a sports league? D) How many hours of professional training took place over the weekend?  
 
Answer & Explanation Answer: B) How many professional sports leagues are there?

Explanation:

A statistical question is a question that can be answered by collecting data that vary.

In the given options, How many professional sports leagues are there? is a statistical question. Here to answer this question, we have to collect data from the sources.

 

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Filed Under: Probability
Exam Prep: Bank Exams

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Q:

If the standard deviation of a population is 6.5, what would be the population variance?

A) 40.25 B) 42.25
C) 18.25 D) 13
 
Answer & Explanation Answer: B) 42.25

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Filed Under: Probability
Exam Prep: Bank Exams

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Q:

Product of digits of a 2-digit number is 72. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

A) 98 B) 89
C) 78 D) 87
 
Answer & Explanation Answer: B) 89

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Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

The line segment AB intersects the straight line CD at B; AB will be smallest when ∠ ABD (in degrees) is

A) 30 B) 60
C) 90 D) 45
 
Answer & Explanation Answer: C) 90

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

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