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Quantitative Aptitude - Arithmetic Ability

Quantitative Aptitude - Arithmetic Ability Questions

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If $\frac{a}{b} + \frac{b}{a} = - 1$ , then the value of $\frac{a^{2}}{b} - \frac{b^{2}}{a}$ is

A) 1	B) -1
C) 0	D) 2

A) 1

B) -1

C) 0

D) 2

Answer & Explanation Answer: C) 0

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1076

What is the compound interest on Rs. 48,000 for 2 years at 20% p.a., if interest is compounded annually?

A) Rs. 69,120	B) Rs. 21,120
C) Rs. 76,800	D) Rs. 72,000

A) Rs. 69,120

B) Rs. 21,120

C) Rs. 76,800

D) Rs. 72,000

Answer & Explanation Answer: B) Rs. 21,120

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Filed Under: Compound Interest
Exam Prep: Bank Exams , CAT

5 1076

If $\sqrt (\sec 2 A - 1) / secA = x,$ then the value of x is

A) cosecA	B) cosA
C) sinA	D) tanA

A) cosecA

B) cosA

C) sinA

D) tanA

Answer & Explanation Answer: C) sinA

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1075

If sin(A/2) = x, then the value of x is

A) √[(1 + cosA)/2]	B) √[(1 - cosA)/2]
C) √[(1 - sinA)/2]	D) √[(1 + sinA)/2]

A) √[(1 + cosA)/2]

B) √[(1 - cosA)/2]

C) √[(1 - sinA)/2]

D) √[(1 + sinA)/2]

Answer & Explanation Answer: B) √[(1 - cosA)/2]

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1075

What is the value of $\sqrt{3^{4} + 12^{2}} ?$

A) 13	B) 15
C) 17	D) 19

A) 13

B) 15

C) 17

D) 19

Answer & Explanation Answer: B) 15

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1075

A mixture of alcohol and water contains 7% alcohol. How much mixture (in litres) is required to get 357 litres of alcohol?

A) 6300	B) 4200
C) 4900	D) 5100

A) 6300

B) 4200

C) 4900

D) 5100

Answer & Explanation Answer: D) 5100

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

2 1075

A certain principal is invested in a scheme of compound interest. The amount obtained after 1 year is Rs 2400 and the amount obtained after 2 years is Rs 2880. What is the rate of interest (in percentage)?

A) 20	B) 15
C) 25	D) 10

A) 20

B) 15

C) 25

D) 10

Answer & Explanation Answer: A) 20

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Filed Under: Simple Interest
Exam Prep: Bank Exams

1 1075

What is the simplified value of $(\cos^{4} A - \sin^{4} A)$ ?

A) 0	B) 2 cos2 A
C) cos2A	D) 1

A) 0

B) 2 cos2 A

C) cos2A

D) 1

Answer & Explanation Answer: C) cos2A

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1074

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