Quantitative Aptitude - Arithmetic Ability Questions

Q:

In the given figure, E and F are the centers of two identical circles. What is the ratio of area of triangle AOB to the area of triangle DOC?

A) 1 : 3 B) 1 : 9
C) 1 : 8 D) 1 : 4
 
Answer & Explanation Answer: B) 1 : 9

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1860
Q:

If (1 + secA)/tanA = x, then x is

A) cot(A/2) B) tan(A/2)
C) cosec(A/2) D) sec(A/2)
 
Answer & Explanation Answer: A) cot(A/2)

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Filed Under: Simplification
Exam Prep: Bank Exams

6 1860
Q:

The ratio of volume of a cone to that of a cylinder if cylinder radius is reduced by 4 times and its height increased by 8 times of that of the cone, is - 

A) 3:2 B) 2:3
C) 5:7 D) 7:5
 
Answer & Explanation Answer: B) 2:3

Explanation:

Ans. Let radius of the base and height of the cone be ‘r’ & ‘h’ respectively.

Then volume of cone = πr2h/3 For cylinder, radius is reduced by 4 times = r/4 And,  height is increased by 8 folds = 8h Volume of cylinder = πR2H = π(r/4)2 (8h) = (16/8)πr2h = πr2h/2 Ratio of volume of cone to volume of cylinder = (πr2h/3) : (πr2h/2) Or, Ratio = 2 : 3.

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Q:

Rajesh sells a machine for Rs 57 lakhs at a loss. Had he sold it for Rs 67 lakh, his gain would have been 7 times the former loss. Find the cost price of the machine.

A) Rs 58.25 lakhs B) Rs 65.75 lakhs
C) Rs 75.14 lakhs D) Rs 50.75 lakhs
 
Answer & Explanation Answer: A) Rs 58.25 lakhs

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

2 1858
Q:

The average marks of 40 students in an examination was 34. It was later found that the marks of one student had been wrongly entered as 62 instead of 26. what is the correct average?

A) 33.1 B) 33.3
C) 33.5 D)  33.7
 
Answer & Explanation Answer: A) 33.1

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

In the following question, select the odd word from the given alternatives.

A) Ludo B) Chess
C) Polo D) Carrom
 
Answer & Explanation Answer: C) Polo

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

A man donates 30% of his wealth to charity. 30% and 25% of the remaining wealth to his wife and son respectively. The rest he divides equally between his three daughters. One of his daughter gets Rs 42 lakh as her share. What was the man's wealth (in Rs lakhs)?

A) 280 B) 400
C) 500 D) 350
 
Answer & Explanation Answer: B) 400

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

A milkman buys milk at Rs 25 per litre and adds 1/4 of water to it and sells the mixture at Rs 26 per litre. His gain (in %) is?

A) 25 B) 20
C) 30 D) 15
 
Answer & Explanation Answer: C) 30

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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