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Quantitative Aptitude - Arithmetic Ability

Quantitative Aptitude - Arithmetic Ability Questions

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If a - b = 4 and ab = -3, then what is the value of $a^{3} - b^{3}$ ?

A) 21	B) 28
C) 23	D) -20

A) 21

B) 28

C) 23

D) -20

Answer & Explanation Answer: B) 28

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1153

Two equal circles intersect each other at point A and B, whose centers are O and O’. OO’ = 24 mm and AB = 10 mm, then find the area (in sq. mm) of the circle.

A) 530.66	B) 520.66
C) 510.33	D) 500.33

A) 530.66

B) 520.66

C) 510.33

D) 500.33

Answer & Explanation Answer: A) 530.66

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Filed Under: Area
Exam Prep: Bank Exams

0 1153

If a - b = 1 and ab = 6, then what is the value of $a^{3} - b^{3}$ ?

A) 21	B) 23
C) 19	D) 25

A) 21

B) 23

C) 19

D) 25

Answer & Explanation Answer: C) 19

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1153

At what point does the line 2x + 5y = -6 cuts the X-axis?

A) (3, 0)	B) (0, 3)
C) (-3, 0)	D) (0, -3)

A) (3, 0)

B) (0, 3)

C) (-3, 0)

D) (0, -3)

Answer & Explanation Answer: C) (-3, 0)

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1153

Product of $9 b^{2}, 3 a^{2}$ and 4ab is

A) 108a2b2	B) 108a3b3
C) 108a3b2	D) 108a4b4

A) 108a2b2

B) 108a3b3

C) 108a3b2

D) 108a4b4

Answer & Explanation Answer: B) 108a3b3

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1153

If the standard deviation of a population is 6.5, what would be the population variance?

A) 40.25	B) 42.25
C) 18.25	D) 13

A) 40.25

B) 42.25

C) 18.25

D) 13

Answer & Explanation Answer: B) 42.25

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Filed Under: Probability
Exam Prep: Bank Exams

2 1153

If X is a prime number, LCM of X and its successive number would be

A) X	B) X (X+1)
C) (X+1)	D) X/(X+1)

A) X

B) X (X+1)

C) (X+1)

D) X/(X+1)

Answer & Explanation Answer: B) X (X+1)

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

3 1153

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 396, then what is the difference between the first and the third number?