Bank Exams Questions

Q:

Δ ABC is right angled at B. If m∠A = 30°. What is the length (in cm) of AB, if AC = 8 cm?

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

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Filed Under: Volume and Surface Area
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Q:

The ratio of total surface area and volume of a sphere is 1 : 7. This sphere is melted to form small spheres of equal size. The radius of each small sphere is 1/6th the radius of the large sphere. What is the sum (in cm2) of curved surface areas of all small spheres?

A) 31276 B) 36194
C) 25182 D) 33264
 
Answer & Explanation Answer: D) 33264

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Filed Under: Volume and Surface Area
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Q:

3 men dig a hole in 10 days. How many days would it take for 5 men to dg the same hole?

A) 50/3 B) 7
C) 5 D) 6
 
Answer & Explanation Answer: D) 6

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Q:

The corners of a square of side ‘a’ are cut away so as to form a regular octagon. What is the side of the octagon?

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

Explanation:

Since we are forming a regular octagon

so AE = AL = FB = BG and so on

So AE = SB = x/√2

AE + EF + FB = side of square = a (Given)

So x/√2 + x + x/√2 = a

X = a/(√2+1) = a(√2 -1)

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Filed Under: Volume and Surface Area
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Q:

What is the simplified value of (sec A + cos A)(sec A – cos A)?

A) 2 tan2A B) 2 sin2 A
C) sin2 A tan2 A D) sin2A + tan2 A
 
Answer & Explanation Answer: D) sin2A + tan2 A

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Filed Under: Simplification
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Q:

Find the missing number?

A) 9 B) 8
C) 6 D) 7
 
Answer & Explanation Answer: C) 6

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Filed Under: Honours and Awards
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Q:

Crabs belongs to the phylum

A) Mollusca B) Cnidaria
C) Arthropoda D) Platyhelminthes
 
Answer & Explanation Answer: C) Arthropoda

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Filed Under: Biology
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Q:

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

A) 15% B) 20%
C) 18% D) 12%
 
Answer & Explanation Answer: B) 20%

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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