6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What should come in place of question mark (?) in the following question?

45% of 400+ √? = 56% of 750 - 40% of 350

A) 10000	B) 1000
C) 10201	D) 9801

Answer & Explanation Answer: A) 10000

Explanation:

45/100×400+√?=56/100 ×750 -40/100 ×350

180 + √? = 420 - 140 180 + √? = 280 √? = 280 - 180 √? = 100 ? = 1002 ? = 10000

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Filed Under: Percentage

1 45265

Q:

Product of two co-prime numbers is 117. Their L.C.M should be

A) 1	B) 117
C) Equal to their H.C.F	D) cannot be calculated

Answer & Explanation Answer: B) 117

Explanation:

H.C.F of co-prime numbers is 1. So, L.C.M = 117/1 =117

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Filed Under: HCF and LCM

122 45218

Q:

Solve the following :

(-8) [36 / {7 - (-2)}] / (-4){19 - (-3) x (-5)} = ?

A) 4	B) -4
C) -2	D) 2

Answer & Explanation Answer: D) 2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

2 45191

Q:

If ${(\frac{5}{7})}^{4 x} . {(\frac{7}{5})}^{3 x - 1} = {(\frac{7}{5})}^{6}$ , then find the value of x which satisfies the equation.

A) -1	B) -7
C) 1	D) 7

Answer & Explanation Answer: B) -7

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 45183

Q:

If $(x + \frac{1}{x}) = 2,$ then find the value of $(x^{3} + \frac{1}{x^{3}}) \div (x^{18} + \frac{1}{x^{18}})$

A) 2/9	B) 5
C) 1	D) 1/9

Answer & Explanation Answer: C) 1

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 45173

Q:

Consider the following two triangles as shown in the figure below.

Choose the correct statement for the above situation.

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: B) 2

Explanation:

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

0 45141

Q:

Which of the following statement(s) is/are TRUE?

$I . \sqrt{12} > \sqrt[3]{16} > \sqrt[4]{24} II . \sqrt[3]{25} > \sqrt[4]{32} > \sqrt[6]{48} III . \sqrt[4]{9} > \sqrt[3]{15} > \sqrt[6]{24}$

A) Only I and II	B) Only I and III
C) Only I	D) All are true.

Answer & Explanation Answer: A) Only I and II

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 45107

Q:

If the letters of the word SACHIN are arranged in all possible ways and these words are written out as in dictionary, then the word ‘SACHIN’ appears at serial number :

A) 601	B) 600
C) 603	D) 602

Answer & Explanation Answer: A) 601

Explanation:

If the word started with the letter A then the remaining 5 positions can be filled in 5! Ways.

If it started with c then the remaining 5 positions can be filled in 5! Ways.Similarly if it started with H,I,N the remaining 5 positions can be filled in 5! Ways.

If it started with S then the remaining position can be filled with A,C,H,I,N in alphabetical order as on dictionary.

The required word SACHIN can be obtained after the 5X5!=600 Ways i.e. SACHIN is the 601th letter.

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Filed Under: Permutations and Combinations

84 45013

Quantitative Aptitude - Arithmetic Ability Questions

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