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Q:

The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What is the mean of marks of the students of three divisions of Class X?

A) 63.32 B) 62.62
C) 61.92 D) 64.72
 
Answer & Explanation Answer: A) 63.32

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Filed Under: Average
Exam Prep: Bank Exams

Q:

A shopkeeper by selling 17 Omega watches, earns a profit equal to the selling price of 7 Omega watches. What is his profit percentage?

A) 41.1 percent B) 82.2 percent
C) 70 percent D) 12.2 percent
 
Answer & Explanation Answer: C) 70 percent

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

Q:

If in a two digit number, the digit at unit place is z and the digit at tens place is 8, then the number is

A) 80z + z B) 80 + z
C) 8z + 8 D) 80z + 8
 
Answer & Explanation Answer: B) 80 + z

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

Q:

What is the value of 2 consecutive natural numbers, sum of whose squares is 145?

A) 8, 9 B) 6, 7
C) 13, 14 D) 9, 10
 
Answer & Explanation Answer: A) 8, 9

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Filed Under: Numbers
Exam Prep: Bank Exams

Q:

What is the value of cosec 3π/4?

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

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

Pradeep has done 1/4th of a job in 14 days, Saquib completes the rest of the job in 56 days. In how many days can they together complete the job?

A) 64 days B) 32 days
C) 16 days D) 8 days
 
Answer & Explanation Answer: B) 32 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

Q:

If 1/√(cosec2A - 1) = x, then value of x is

A) cotA B) tanA
C) sinA D) cosA
 
Answer & Explanation Answer: B) tanA

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

To travel 612 km, an Express train takes 9 hours more than Rajdhani. If the speed of the Express train is doubled, it takes 3 hours less than Rajdhani. The speed (in km/hr) of Rajdhani is

A) 40.8 B) 51
C) 30.6 D) 61.2
 
Answer & Explanation Answer: A) 40.8

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Filed Under: Time and Distance
Exam Prep: Bank Exams