Aptitude and Reasoning Questions

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

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

x_zz_xx_z_yx

A) xyxy B) xxxy
C) yyyz D) zyyy
 
Answer & Explanation Answer: C) yyyz

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Filed Under: Alphabet Test
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Q:

What is the reflection of the point (1 , 2) in the line y = 3?

A) (1, -4) B) (1, 4)
C) (-1, -4) D) (-1, 4)
 
Answer & Explanation Answer: B) (1, 4)

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Filed Under: Volume and Surface Area
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Q:

A solid sphere of radius 9 cm is melted to form a sphere of radius 6 cm and a right circular cylinder of same radius. The height of the cylinder so formed is

A) 19 cm B) 21 cm
C) 23 cm D) 25 cm
 
Answer & Explanation Answer: A) 19 cm

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Filed Under: Volume and Surface Area
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Q:

In this question, the sets of numbers given in the alternatives are represented. The columns and rows of Matrix I are numbered from 0 to 3 and that of Matrix II are numbered from 5 to 8. A letter from these matrices can be represented first by its row and next by its column, e.g., E can be represented by 00,11, etc., and 'I' can be represented by 56, 86, etc. Similarly you have to identify the set for the word 'TOLD'

A) 67, 30, 55, 13 B) 76, 02, 13, 55
C) 76, 33, 55, 31 D) 85, 02, 23, 31
 
Answer & Explanation Answer: C) 76, 33, 55, 31

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Filed Under: Figure Matrix
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Q:

What is the diameter (in cm) of a sphere of surface area 154 sq cm?

A) 3.5 B) 14
C) 10.5 D) 7
 
Answer & Explanation Answer: D) 7

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Filed Under: Volume and Surface Area
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Q:

If in ΔABC, DE ||BC, AB = 7.5cm, BD = 6cm and DE = 2cm, then the length of BC in cm is

A) 6 B) 8
C) 10 D) 10.5
 
Answer & Explanation Answer: C) 10

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Filed Under: Volume and Surface Area
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Q:

cos(A+B) + cos(A-B) is equal to

A) 2cosAcosB B) 2sinAsinB
C) 2sinAcosB D) 2cosAsinB
 
Answer & Explanation Answer: A) 2cosAcosB

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