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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

I forgot the last digit of a 7-digit telephone number. If 1 randomly dial the final 3 digits after correctly dialing the first four, then what is the chance of dialing the correct number?

A) 1/999 B) 1/1001
C) 1/1000 D) 4/1000
 
Answer & Explanation Answer: C) 1/1000

Explanation:

It is given that last three digits are randomly dialled. then each of the digit can be selected out of 10 digits in 10 ways.
Hence required probability =1103 = 1/1000

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Filed Under: Probability

28 39842
Q:

The sum of the square of three consecutive odd numbers is 2195. Find the numbers.

 

A) 21, 23, 25   B) 23, 25, 27  
C) 25, 27, 29   D) 27, 29, 31
 
Answer & Explanation Answer: C) 25, 27, 29  

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

1 39822
Q:

The volume of a cube is 274.625 cm³. Find its side (in cm).

 

A) 7.5 B) 6.5
C) 5.5 D) 3.5
 
Answer & Explanation Answer: B) 6.5

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 39807
Q:

Find the volume (in cm3) of a sphere of diameter 7 cm.

 

A) 140.25 B) 179.67
C) 337.16 D) 213.74
 
Answer & Explanation Answer: B) 179.67

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

2 39713
Q:

The CO2 emissions in million metric tons over 3 years are given in the following table.

 

What is the increase in the percentage of CO2 emission from year 2016 to 2017?

A) 36.36% B) 26.36%
C) 63.63% D) 36.45%
 
Answer & Explanation Answer: A) 36.36%

Explanation:
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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT

1 39692
Q:

Select the odd character out of the following series.

 

 

A) λ B) 5
C) α D) π
 
Answer & Explanation Answer: B) 5

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

2 39585
Q:

Tarun got 30% concession on the labelled price of an article and sold it for Rs. 8750 with 25% profit on the price he bought. What was the labelled price ?

A) 10000 B) 12000
C) 13000 D) 14000
 
Answer & Explanation Answer: A) 10000

Explanation:

Cost Price = Rs.100125×8750 = Rs. 7000. Let the labelled price be Rs. x. 

 

Then, 70100*x=7000 ⇒x=Rs.7000*10070 

 

= Rs.10000

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Filed Under: Profit and Loss

201 39581
Q:

A and B start a business jointly. A invests Rs. 16,000 for 8 months and B remains in  the business for 4 months, Out of total profit, B claims - of the profit. How much money was contributed by B ?

A) 12000 B) 12800
C) 13000 D) 14500
 
Answer & Explanation Answer: B) 12800

Explanation:

Let the total profit be Rs. x. Then, B = 2x/7 and A = (x - 2x /7) =  5x / 7.

So, A : B = 5x/7 : 2x/7 = 5 : 2.

Let B s capital be Rs. y. Then, (16000 * 8) / ( y * 4) = 5/2  <=> (16000 * 8 * 2) / (5 * 4) = 12800..  

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Filed Under: Partnership

35 39550