Aptitude and Reasoning Questions

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:

A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened.

 

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: D) 4

Explanation:
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Q:

A 600 metres long train is running at the speed of 81 km/hr. If it crosses a platform in 40 seconds, then what is the length of the platform (in metres)?

 

A) 220 B) 300
C) 360 D) 410
 
Answer & Explanation Answer: B) 300

Explanation:
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Filed Under: Problems on Trains
Exam Prep: Bank Exams

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Q:

If a mirror is placed on the line MN, then which is the right image of the given figure?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:
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Filed Under: Image Analysis
Exam Prep: Bank Exams

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Q:

Select the odd letters from the given alternatives.

A) WVU B) QPO
C) GED D) LKJ
 
Answer & Explanation Answer: C) GED

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

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Q:

ABC is an equilateral triangle of side 6 cm. If a circle of radius 1 cm is moving inside and along the sides of the triangle, then the locus of the centre of the circle is an equilateral triangle of side is

A) 5 cm B) (6 - 2√3) cm
C) 4 cm D) (3 + √3) cm
 
Answer & Explanation Answer: B) (6 - 2√3) cm

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) Serious B) Severe
C) Harsh D) Deceptive
 
Answer & Explanation Answer: D) Deceptive

Explanation:
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Filed Under: Odd Man Out
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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