Mathematics MCQs

Probability Questions with solutions MCQs

1. Two dice are rolled simultaneously. Find the probability of getting a multiple of 2 on one die and a multiple of 3 on the other die.

A

1/2

B

11/36

C

1/3

D

13/36

Probability Veterinary Pharmacist 2024
Correct Answer : B
Explanation :

Favourable outcomes = 11 (counting all ordered outcomes where one die is in {2,4,6} and the other in {3,6}, removing double count). Probability = 11/36.

Correct Answered :

Wrong Answered :

2. A box contains a total 12 balls of red and blue color. One blue ball is to be drawn at random from the box. The probability of drawing the ball becomes double of what it was before when 6 more blue balls are put in the box. The number of blue balls and red balls present initially is:

A

5,7

B

4,8

C

3,9

D

6,6

Probability Veterinary Pharmacist 2024
Correct Answer : C
Explanation :

Let initial blue=b, red=12-b. (b+6)/18 = 2*(b/12) => (b+6)/18 = b/6 => b=3, red=9.

Correct Answered :

Wrong Answered :

3. Theory of probability can be applied to

A

Cumulative errors only

B

Accidental errors only

C

Both accidental and cumulative errors

D

None of the above is correct

Probability J.E Civil 2023
Correct Answer : B
Explanation :

<p>B&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p>

Correct Answered :

Wrong Answered :

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