Exams Questions and Answers

Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

8 + 2 - 40 ÷ 5 x 16 = 44

A) - and +	B) ÷ and x
C) x and -	D) + and ÷

Answer & Explanation Answer: D) + and ÷

Explanation:

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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

1 31061

Q:

In a scheme, a pack of three soaps with MRP Rs.45 is available for Rs.42. If it still gives a profit of 5% to the shopkeeper, then the cost price of the pack is ?

A) 38	B) 39
C) 40	D) 41

Answer & Explanation Answer: C) 40

Explanation:

Given M.P=45,S.P=42, Profit = 0.05

Let C.P=x , Then

Profit = (42-x)/x = 0.05
=> x = 40.

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

58 31017

Q:

Find the quadratic equations whose roots are the reciprocals of the roots of $2 x^{2} + 5 x + 3$ ?

A) $3 x^{2} + 5 x + 2 = 0$

B) $5 x^{2} + 3 x + 2 = 0$

C) $3 x^{2} - 5 x - 2 = 0$

D) None

A) A	B) B
C) C	D) D

Answer & Explanation Answer: A) A

Explanation:

The quadratic equation whose roots are reciprocal of $2 x^{2} + 5 x + 3 = 0$ can be obtained by replacing x by 1/x.

Hence, 2(1/x)(1/x)+ 5(1/x) + 3 = 0

=> $3 x^{2} + 5 x + 2 = 0$

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Filed Under: Mathematical Operations
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

78 30996

Q:

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

(A) Square (B) Sphere (C) Rectangle (D) Circle

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

1 30995

Q:

A ‘breath test’ used by traffic police to check drunken driving uses ____?

A) Turmeric on filter paper	B) Silica gel coated with silver nitrate
C) potassium permanganate-sulphuric acid	D) Potassium dichromatic-sulphuric acid

Answer & Explanation Answer: D) Potassium dichromatic-sulphuric acid

Explanation:

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Filed Under: Chemistry
Exam Prep: AIEEE

114 30972

Q:

Find the total surface area (in cm2) of a hemisphere of diameter 21 cm.

A) 1039.5	B) 844.5
C) 637	D) 472

Answer & Explanation Answer: A) 1039.5

Explanation:

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

2 30961

Q:

The cost of fencing a square field @ Rs. 20 per metre is Rs.10.080.How much will it cost to lay a three meter wide pavement along the fencing inside the field @ Rs. 50 per sq m

A) 53800	B) 43800
C) 83800	D) 73800

Answer & Explanation Answer: D) 73800

Explanation:

perimeter = total cost / cost per m = 10080 /20 = 504m
side of the square = 504/4 = 126m
breadth of the pavement = 3m
side of inner square = 126 - 6 = 120m
area of the pavement = (126 x126) - (120 x 120) = 246 x 6 sq m
cost of pavement = 246*6*50 = Rs. 73800

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

30 30939

Q:

Who is known as the father of Pentium Chip?

A) Vinod Krishnan	B) Seymour I. Rubinstein
C) Sanjay Mokashi	D) Vinod Dham

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