Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the value of √[(1 - sinA)/(1 + sinA)]?

A) cosA/(1 - sinA) B) cosecA/(1 + sinA)
C) cosA/(1 + sinA) D) cosecA/(1 - sinA)
 
Answer & Explanation Answer: C) cosA/(1 + sinA)

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Q:

If A and B are the roots of the equation Ax2  A2x + AB = 0, then what is the value of A and B respectively?

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

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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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Q:

What is the value of (cos45° + 1/3) ?

A) 2+√3 B) (2√2+1)/√2
C) (3+√2)/3√2 D) 5/√3
 
Answer & Explanation Answer: C) (3+√2)/3√2

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Q:

In what ratio rice costing Rs 14/kg mixed with another rice costing Rs 11/kg to get the mixture costing Rs 11.6/kg?

 

A) 2 : 5 B) 1 : 4
C) 1 : 3 D) 1 : 5
 
Answer & Explanation Answer: D) 1 : 5

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Q:

The age of Dr. Pandey is four times the age of his son. After 10 years , the age of Dr. Pandey will be twice the age of his son . The present age of Dr. Pandey's son is

A) 4 years B) 5 years
C) 6 years D) 8 years
 
Answer & Explanation Answer: B) 5 years

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Q:

Present ages of Rahul and his brother are in the ratio of 5 : 3. After 4 years ratio of ages of Rahul’s brother and his sister will be 5 : 6. If the present age of his sister is 26 years, then what will be the age (in years) of Rahul 3 years from now?

 

A) 38 B) 35
C) 40 D) 31
 
Answer & Explanation Answer: A) 38

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Q:

Six years ago, the ratio of the two persons P and Q was 3 : 2. Four years hence the ratio of their ages will be 8 : 7. What is P's age?

A) 10 years B) 12 years
C) 14 years D) 8 years
 
Answer & Explanation Answer: B) 12 years

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