Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average of ages of threee persons is 60 years . Those ages are in the proportion of 1:2:3. what is the age of the youngest one among them?

Answer

Suppose the ages of three persons are x, 2x, 3x years respectively 





Hence, age of youngest person = x = 30 years.

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Subject: Problems on Ages

2 3738
Q:

Compute of 1848 / 231 - 10 = ?

 

A) 2 B) -2
C) 188/221 D) 1884/221
 
Answer & Explanation Answer: B) -2

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 3737
Q:

If 4/7 of P is equal to 12/14 of Q, then what is P : Q?

 

A) 15 : 8   B) 14 : 9  
C) 7 : 8   D) 3 : 2
 
Answer & Explanation Answer: D) 3 : 2

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

2 3737
Q:

45 + 47 = ?

 

A) 8/12 B) 48/35
C) 8/35 D) 16/35
 
Answer & Explanation Answer: B) 48/35

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 3733
Q:

Two cards are drawn at random from a well - shuffled pack of 52 cards. what is the probability that either both are red or both are queens?

A) 17/112 B) 55/221
C) 55/121 D) 33/221
 
Answer & Explanation Answer: B) 55/221

Explanation:

n(S) = C252 = 1326

 

 Let  A = event of getting both red cards

 

and B = event of getting both queens

 

then AB = event of getting two red queens

 

n(A) = C226 = 325,   n(B) = C24 = 6

 

 n(AB)=C22=1

 

  PA=3251326, PB = 61326

 

 PAB=11326

 

P ( both red or both queens) = PAB

 

PA+PB-PAB=3251326+1221-11326=55221

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Filed Under: Probability

6 3728
Q:

The true-discount on Rs.2480 due after a certain period at 5% is Rs.80. Find the due period.

A) 6months B) 5months
C) 8months D) 3months
 
Answer & Explanation Answer: C) 8months

Explanation:

P.W= Amount – (T.D)

 

Time = 100×TDPW×R

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Filed Under: True Discount
Exam Prep: Bank Exams
Job Role: Bank PO

6 3726
Q:

35+37=?

 

A) 935 B) 612
C) 1135 D) 635
 
Answer & Explanation Answer: C) 1135

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 3724
Q:

What is the value of (1/√3 - sin45)?

 

A) 1/2√3   B) (√2-√3)/√6  
C) 1-√2   D) (4-√3)/2
 
Answer & Explanation Answer: B) (√2-√3)/√6  

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 3715