Quantitative Aptitude - Arithmetic Ability Questions

Q:

If a website is selling smartphone at Rs 18,000 which is marked at Rs 25,000, then what is the discount (in %) at which the smartphone is being sold?

A) 25 B) 22
C) 28 D) 20
 
Answer & Explanation Answer: C) 28

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be

A) 1 B) 0
C) 2 D) -1
 
Answer & Explanation Answer: B) 0

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

A) 0.1 % increase B) 1 % decrease
C) 0.1 % decrease D) No changes
 
Answer & Explanation Answer: B) 1 % decrease

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Q:

50 litre mixture of water and alcohol contains 10% alcohol. How much more alcohol must be added to make the strength of alcohol 40% in the new mixture?

A) 25 B) 30
C) 20 D) 23
 
Answer & Explanation Answer: A) 25

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

X does 25% of a work in 20 days. Y joins X and they together finish the remaining work in 15 days. Y alone can do the whole work in ___ days.

 

A) 30 days B) 25 1/2 days
C) 26 2/3 days D) 26 1/5 days
 
Answer & Explanation Answer: C) 26 2/3 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Both A and B together can complete a work in 20 days and B alone can complete the same work in 36 days. In how many days will A alone complete the work?

A) 30 B) 50
C) 45 D) 42
 
Answer & Explanation Answer: C) 45

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Two circles are having radii 9 cm and 12 cm. The distance between their centres is 15 cm. What is the length (in cm) of their common chord?

A) 6.8 B) 13.6
C) 7.2 D) 14.4
 
Answer & Explanation Answer: D) 14.4

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

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Q:

If a + b + c + d = 4, then the value of 1(1-a)(1-b)(1-c) + 1(1-b)(1-c)(1-d) + 1(1-c)(1-d)(1-a) + 1(1-d)(1-a)(1-b)

A) 0 B) 1
C) 4 D) 1+ abcd
 
Answer & Explanation Answer: A) 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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