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Q:

In a class of 56 students there are 28 girls. The average weight of these girls is 46 kg and average weight of the full class is 51 kgs. What is the average weight of the boys of the class?

A) 55 B) 56
C) 53 D) 54
 
Answer & Explanation Answer: B) 56

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Filed Under: Average
Exam Prep: Bank Exams

Q:

If 2cos2A - 1 = x, then the value of x is

A) cosec4A - sin4A B) cos4A - sin4A
C) cos4A - tan4A D) cosec4A - tan4A
 
Answer & Explanation Answer: B) cos4A - sin4A

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

A cylindrical capsule has hemispherical ends of the radii equal to radius of the cylindrical part. If length of the capsule is 40 m and radius 6 m, what is the total surface area of this capsule?

A) 3017.14 sq mts B) 4525.71 sq mts
C) 1508.57 sq mts D) 754.29 sq mts
 
Answer & Explanation Answer: C) 1508.57 sq mts

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

Q:

If the radius of a circle is increased by 21%, then its area will increase by what percent?

A) 42 percent B) 21 percent
C) 23.205 percent D) 46.41 percent
 
Answer & Explanation Answer: D) 46.41 percent

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

A dishonest milkman buys milk at Rs 30 per litre and adds 1/5 of water to it and sells the mixture at Rs 32 per litre. What will be his gain?

A) 33.33 percent B) 50 percent
C) 28 percent D) 25 percent
 
Answer & Explanation Answer: C) 28 percent

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

Q:

A can do a work in 15 days and B in 20 days. If they work on it together for 5 days, then what fraction of work is left?

A) 2/9 B) 3/10
C) 5/12 D) 1/4
 
Answer & Explanation Answer: C) 5/12

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Filed Under: Time and Work
Exam Prep: Bank Exams

Q:

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

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

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

In a rectangle _____.

A) Consecutive angles are congruent as well as supplementary B) Diagonals are perpendicular to each other
C) Diagonals bisect opposite angles D) Diagonals are not equal
 
Answer & Explanation Answer: A) Consecutive angles are congruent as well as supplementary

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Filed Under: Simplification
Exam Prep: Bank Exams