# vs.eyeandcontacts.com

## Chapter 3 Data and Handling Exercise 3.4

Question 1: Tell whether the following is certain to happen, impossible, can happen but not certain.
(i) You are older today than yesterday.
It is certain to happen.

(ii) A tossed coin will land heads up.
It can happen but not certain.

(iii) A die when tossed shall land up with 8 on top.
It is impossible.

(iv) The next traffic light seen will be green.
It can happen but not certain.

(v) Tomorrow will be a cloudy day.
It can happen but not certain.

Question 2: There are 6 marbles in a box with numbers from 1 to 6 marked on each of them.
(i) What is the probability of drawing a marble with number 2?

Number of marbles in a box marked with numbers 1 to 6 = 6
Probability of drawing a marble with number 2 = Number of favourable outcomes/Number of possible outcomes
= 1/6

(ii) What is the probability of drawing a marble with number 5?

Number of marbles in a box marked with numbers 1 to 6 = 6
Probability of drawing a marble with number 5 = Number of favourable outcomes/Number of possible outcomes
= 1/6

Question 3: A coin is flipped to decide which team starts the game. What is the probability that your team will start?