Terms Used in Probability

Q.

What are the possible outcomes when a coin is tossed?

1. We get heads facing up

2. We get tails facing up

3. We get neither heads, nor tails facing up, but the coin lies flat on the ground

4. The coin lies flat with both heads and tails of the coin facing up

Q. Define the following terms:

(i) Random experiment
(ii) Trial and out come
(iii) Sample point and sample space
(iv) Event
$\left[4\right]$

Q.

From the first 20 natural numbers, Ram selects a number at random. What is the number of favourable outcomes, if this number has to be divisible by 4?

1. 5

2. 1

3. 4

4. 6

Q. Select the outcomes that are possible when one coin and one die are tossed together.

1. {2, T}
2. {T, T}
3. {7, H}
4. {5, H}

Q. Sum of the probabilities of all outcomes of a random experiment is always_____.

1. 1
2. 0
3. 0.5
4. none of the above

Q.

A tray contains 6 red beads, 6 yellow beads and 6 blue beads. A bead is drawn from the tray without looking into it. The outcomes are equally likely in this case.

1. True

2. False

Q.

Find the total number of outcomes when two coins and a die are tossed and rolled simultaneously.

1. 10

2. 14

3. 36

4. 24

Q. Tossing a coin is an example of ___.

1. non-random experiment
2. true experiment
3. random experiment
4. false experiment

Q.

What are the number of possible outcomes of tossing a coin once?

1. 2

2. 3

3. 5

4. 4

Q. If three coins are tossed simultaneously then the total number of outcomes is ______.

1. 8
2. 7
3. 6
4. 5

Q.

Which of the following is/are random experiment(s)?

1. tossing an unbiassed coin

2. throwing a dice

3. drawing a card out from a deck of 52 cards

4. picking a red ball from a bag of 16 red balls and 12 blue balls, without looking into it.