Aptitude and Reasoning Questions

Q:

In a class, average height of all students is 'a' cms. Among them, average height of 10 students is 'b' cms and the average height of the remaining students is 'c' cms. Find the number of students in the class. (Here a>c and b>c )

A) (a(b-c))/(a-c) B) ((b-c)/(a-c))
C) ((b-c)/10(a-c)) D) (10(b-c))/(a_c))
 
Answer & Explanation Answer: D) (10(b-c))/(a_c))

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Q:

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

I. x2+ 30x + 81 = 0

II.y2-9y -162 = 0

A) x > y B) x>y
C) x < y D) x
 
Answer & Explanation Answer:

Explanation:

x^2+ 30x + 81 = 0
x^2+ 27x + 3x + 81 = 0
x = -3, -27
y^2-9y -162 = 0
y^2-18y + 9y -162 = 0
y = -9, 18
Hence, no relationship can be established between x and y

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Filed Under: Simplification
Exam Prep: Bank Exams
Job Role: Bank PO , Bank Clerk

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Q:

Find the standard deviation of {11, 7, 10,13, 9}

A) 1 B) 2
C) 4 D) 5
 
Answer & Explanation Answer: B) 2

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Filed Under: Probability
Exam Prep: Bank Exams

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Q:

Area of 4 walls of a cuboid is 448 sq cm, its length is 18 cm and height is 8 cm. What is its breadth (in cm)?

A) 10 B) 9
C) 8 D) 7
 
Answer & Explanation Answer: A) 10

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

If the elevation of the Sun changes from 30° to 60° , then the difference between the lengths of shadows of a pole 15 m high, is

A) 7.5 m B) 15 m
C) 10√3 m D) 5√3 m
 
Answer & Explanation Answer: C) 10√3 m

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Filed Under: Height and Distance
Exam Prep: Bank Exams

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Q:

Five girls are sitting facing towards the north. Rekha is between Shalini and Neetu. Pooja is to the immediate right of Neetu and Shalini is to the immediate right of Neha. Who is sitting in the middle?

A) Shalini B) Neetu
C) Rekha D) Pooja
 
Answer & Explanation Answer: C) Rekha

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Filed Under: Direction Sense Test
Exam Prep: Bank Exams

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Q:

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?

A) 1 B) 15
C) 19 D) 17
 
Answer & Explanation Answer: A) 1

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

Which of the Answer figures is the correct water image for the given Problem figure ?

A) A B) B
C) C D) D
 
Answer & Explanation Answer: C) C

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Filed Under: Image Analysis

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