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 Quantitative Aptitude - Arithmetic Ability Questions

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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
Exam Prep: Bank Exams

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Q:

BD and CE are two medians of the triangle ABC. If EO = 7 cm, then the length of CE is

A) 28 cm B) 14 cm
C) 21 cm D) 35 cm
 
Answer & Explanation Answer: C) 21 cm

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

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Q:

What is the simplified value of (cosec A + sin A)(cosec A – sin A)?

A) cos2A + cot2A B) 2 cos2A
C) 2 cot2A D) 2 cos A cot A
 
Answer & Explanation Answer: A) cos2A + cot2A

Explanation:
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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

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Q:

What sum will produce the same interest in 9 years at the rate 8% simple interest as Rs. 800 producein 3 years at 9/2% per annum?

A) Rs. 100 B) Rs. 125
C) Rs. 150 D) Rs. 110
 
Answer & Explanation Answer: C) Rs. 150

Explanation:
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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

The average revenues of 13 consecutive years of a company is Rs 78 lakhs. If the average of first 7 years is Rs 73 lakhs and that of last 7 years is Rs 85 lakhs, what is the revenue for the 7th year?

A) Rs 94 lakhs B) Rs 90 lakhs
C) Rs 88 lakhs D) Rs 92 lakhs
 
Answer & Explanation Answer: D) Rs 92 lakhs

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams

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Q:

Which of the following quadratic equations has real roots?

A) 4x2 - 3x + 6 = 0 B) 2x2 + 7x + 6 = 0
C) x2 - 2x + 4 = 0 D) 3x2 - 4x + 3 = 0
 
Answer & Explanation Answer: B) 2x2 + 7x + 6 = 0

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Find out the odd word/letters/number/number pair from the given alternatives.

A) 56 B) 72
C) 90 D) 64
 
Answer & Explanation Answer: D) 64

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

If 5x - 1 < 3x + 2 and 5x + 5 > 6 - 2x; then x can take which of the following values?

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

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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