Probability Quiz Set 018

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Question 1

What is the probability that two friends born in a non-leap years do not have the same birthdays?

 A

${364/365}$.

 B

$21/365$.

 C

$365/365$.

 D

$369/365$.

Soln.
Ans: a

The birthday of second friend has 365 outcomes. If it is not to match the birthday of the first friend, the number of favorable outcomes is 365 - 1 = 364. So probability is 364/365.


Question 2

Karmjeet and Sham are friends. What is the probability that both will have different birthdays, ignoring a leap year?

 A

${364/365}$.

 B

$21/365$.

 C

$365/365$.

 D

$369/365$.

Soln.
Ans: a

The birthday of second friend has 365 outcomes. If it is not to match the birthday of the first friend, the number of favorable outcomes is 365 - 1 = 364. So probability is 364/365.


Question 3

One card is drawn at random from a pack of 52 cards. What is the probability that it is NEITHER a Jack, nor a Queen or a King?

 A

10/13.

 B

5/26.

 C

1/13.

 D

3/13.

Soln.
Ans: a

There are 12 such face cards in the entire deck of 52 cards, so the required probability of getting one of them is 12/52 = 3/13. The probability of NOT getting is 1 - 3/13 = 10/13.


Question 4

A piggy bank contains 28 nos. of 50-paise coins, 59 nos. of 1-rupee coins and 76 nos. of 2-rupee coins. The piggy bank is turned upside down, and one coin falls down. What is the probability that it is a 50-paise coin?

 A

${28/163}$.

 B

$76/163$.

 C

$29/163$.

 D

$33/163$.

Soln.
Ans: a

Out of the total number of coins = 163, the chances favoring 50-paise coin are 28. So the probability is 28/163 = ${28/163}$.


Question 5

What is the probability of getting a multiple of 3 when a dice is tossed in the air?

 A

1/3.

 B

1/2.

 C

1/4.

 D

0.

Soln.
Ans: a

Total outcomes are 6. The number of favorable chances are two: 3, 6. So probability is 2/6 = 1/3.


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Creative Commons License
This Blog Post/Article "Probability Quiz Set 018" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2019-08-18.

Posted by Parveen(Hoven),
Aptitude Trainer


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