Quantitative Aptitude - Arithmetic Ability Questions

Q:

The mean score in a test of the 12 boys in a class was 16 while the overall mean of the 30 students in the class was 18.1. What was the mean score of the girls?

A) 19.8 B) 20.5
C) 20 D) 19.5
 
Answer & Explanation Answer: D) 19.5

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

If tan(A/2) = x, then the value of x is

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

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Q:

In a Rhombus ABCD, measure of angle CAB is 30°, what is the measure of angle ABC?

A) 60° B) 120°
C) 90° D) 150°
 
Answer & Explanation Answer: B) 120°

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

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Q:

Rs 9000 is divided among P, Q and R in the ratio of 5 : 6 : 7. What is the share (in Rs) of R?

A) 2500 B) 3500
C) 3000 D) 4000
 
Answer & Explanation Answer: B) 3500

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

Two students appeared for an examination. One of them secured 22 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are _______.

A) 121 and 99 B) 43 and 21
C) 58 and 36 D) 86 and 64
 
Answer & Explanation Answer: A) 121 and 99

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

What is the value of (3/5 + 7/9)?

A) 62/45 B) 31/28
C) 5/7 D) 1/7
 
Answer & Explanation Answer: A) 62/45

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If cot π/3c -­ tan π/4c = x, then the value of x is

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

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If sinC + sinD =X, then the value of X is?

A) 2cos[(C+D)/2]sin[(C-D)/2] B) 2sin[(C+D)/2]cos[(C-D)/2]
C) 2cos[(C+D)/2]cos[(C-D)/2] D) 2sin[(C+D)/2]sin[(D-C)/2]
 
Answer & Explanation Answer: B) 2sin[(C+D)/2]cos[(C-D)/2]

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

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