## 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. Answer:** It is certain to happen.

**(ii) A tossed coin will land heads up.**

Answer:It can happen but not certain.

Answer:

**(iii) A die when tossed shall land up with 8 on top.**

Answer:It is impossible.

Answer:

**(iv) The next traffic light seen will be green.**

Answer:It can happen but not certain.

Answer:

**(v) Tomorrow will be a cloudy day.**

Answer:It can happen but not certain.

Answer:

**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?

Answer:

(i) What is the probability of drawing a marble with number 2?

Answer:

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?**

Answer:

Answer:

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?**

Answer:

Answer:

Number of faces in a coin = 2 (Head and Tail)

Probability of our team starts first = Number of favourable outcomes/Number of possible outcomes

= 1/2

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