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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Solve the following:

 

11 + sinθ + 11 - sinθ = ?

 

A) 2cos2θ B) 1
C) 0 D) 2sec2θ
 
Answer & Explanation Answer: D) 2sec2θ

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 52224
Q:

Find the appropriate value of '?' in (14.998)3 = ?

 

A) 3573 B) 4096
C) 3378 D) 3374
 
Answer & Explanation Answer: D) 3374

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Filed Under: Simplification
Exam Prep: Bank Exams

0 52183
Q:

If cosθ = 4/5, then (secθ + cosecθ) =

 

A) 7/5 B) 15/12
C) 35/12 D) 12/5
 
Answer & Explanation Answer: C) 35/12

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Exam Prep: Bank Exams

1 52177
Q:

A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

A) 650 B) 690
C) 698 D) 700
 
Answer & Explanation Answer: C) 698

Explanation:

S.I. for 1 year =  Rs. (854 - 815) = Rs. 39.

S.I. for 3 years = Rs.(39 x 3) = Rs. 117.

Principal = Rs. (815 - 117) = Rs. 698

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Filed Under: Simple Interest
Exam Prep: GRE

259 52171
Q:

ΔABC is right angled at B. If cotA = 8/15, then what is the value of cosC ?

 

A) 15/8   B) 8/17  
C) 17/15   D) 15/17
 
Answer & Explanation Answer: D) 15/17

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Filed Under: Simplification
Exam Prep: Bank Exams

0 51989
Q:

22 - 33 + 43 - 62 = ?

 

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

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Filed Under: Simplification
Exam Prep: Bank Exams

0 51781
Q:

Select the number pair that does not belong in the following group.

 

(1,1), (4,64), (8,512), (9,719)

 

A) (1,1) B) (8,512)
C) (9,719) D) (4,64)
 
Answer & Explanation Answer: C) (9,719)

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 51777
Q:

Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats ?

A) 1:2:3 B) 2:3:4
C) 3:4:5 D) 4:5:6
 
Answer & Explanation Answer: B) 2:3:4

Explanation:

Originally, let the number of seats for Mathematics, Physics and Biology be 5x, 7x and 8x respectively.
Number of increased seats are (140% of 5x), (150% of 7x) and (175% of 8x).
⇒ [(140/100) × 5x],[(150/100) × 7x] and [(175/100) × 8x]
⇒ 7x, 21x/2 and 14x.

⇒ The required ratio =7x : 21x/2 : 14x
⇒ 14x : 21x : 28x
⇒ 2 : 3 : 4

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Filed Under: Ratios and Proportions

162 51713