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 Quantitative Aptitude - Arithmetic Ability Questions

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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

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams

4 1868
Q:

Ravi sold a smartphone for Rs. 30,000. Had he offered a discount of 10% on the selling price(SP), he would have earned a profit of 35%. What is the cost price?

A) Rs. 20,000 B) Rs. 22,000
C) Rs. 24,000 D) Rs. 26,000
 
Answer & Explanation Answer: A) Rs. 20,000

Explanation:
30,000*90/100 = 27000
27,000 = CP*135*/100
CP = 20000
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

2 1868
Q:

A student multiplied a number by 4/7 instead of 7/4. What is the percentage error in the calculation?

A) 206.25 percent B) 67.35 percent
C) 33.67 percent D) 103.13 percent
 
Answer & Explanation Answer: B) 67.35 percent

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Filed Under: Percentage
Exam Prep: Bank Exams

1 1867
Q:

After deducting 12% from a certain sum and then deducting 25% from the remainder, 2508 is left, then what is the initial sum?

A) 3500 B) 3450
C) 3970 D) 3800
 
Answer & Explanation Answer: D) 3800

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Filed Under: Percentage
Exam Prep: Bank Exams

4 1867
Q:

(1 + sec 20° + cot 70°)(1 - cosec 20° + tan70°) is equal to

A) 0 B) 1
C) 2 D) 3
 
Answer & Explanation Answer: C) 2

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Filed Under: Simplification
Exam Prep: Bank Exams

0 1867
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 1867
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

0 1866
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

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

2 1866