6500+ Quantitative Aptitude Questions and Answers With Explanation

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 40435

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 40314

Q:

The total surface area of a hemisphere is 1039.5 cm2. Find its diameter (in cm).

A) 21	B) 10.5
C) 42	D) 31.5

Answer & Explanation Answer: A) 21

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

1 40293

Q:

A mixture of 150 liters of wine and water contains 20% water. How much more water should be added so that water becomes 25% of the new mixture?

A) 10 liters	B) 20 liters
C) 30 liters	D) 40 liters

Answer & Explanation Answer: A) 10 liters

Explanation:

Number of liters of water in 125 liters of the mixture = 20% of 150 = 1/5 of 150 = 30 liters

Let us Assume that another 'P' liters of water are added to the mixture to make water 25% of the new mixture. So, the total amount of water becomes (30 + P) and the total volume of the mixture becomes (150 + P)

Thus, (30 + P) = 25% of (150 + P)

Solving, we get P = 10 liters

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Filed Under: Alligation or Mixture

151 40266

Q:

Direction: What value should come in place of the question mark (?) in the following question?

$\sqrt{529} * 6 / 2 * ? = 14076$

A) 204	B) 251
C) 102	D) 146

Answer & Explanation Answer: A) 204

Explanation:

23*3*x=14076
69*x=14076
= 69 =204

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

0 40229

Q:

The H.C.F and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125 , then that number is

A) 77	B) 88
C) 99	D) 110

Answer & Explanation Answer: A) 77

Explanation:

Product of numbers = 11 x 385 = 4235

Let the numbers be 11a and 11b . Then , 11a x 11b = 4235 => ab = 35

Now, co-primes with product 35 are (1,35) and (5,7)

So, the numbers are ( 11 x 1, 11 x 35) and (11 x 5, 11 x 7)

Since one number lies 75 and 125, the suitable pair is (55,77)

Hence , required number = 77

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Filed Under: HCF and LCM

72 39903

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 = ${(\frac{1}{10})}^{3}$ = 1/1000

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Filed Under: Probability

28 39877

Q:

In the following question, select the odd letter/letters from the given alternatives.

A) BGLR	B) DINS
C) HMRW	D) KPUZ

Quantitative Aptitude - Arithmetic Ability Questions

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