# NCERT Class 7 Mathematics Solutions: Chapter 3 –Data Handling Exercise 3.4 Part 1

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1. Tell whether the following is certain to happen, impossible can happen but not certain.

(i) You are older today than yesterday.

(ii) A tossed coin will land heads up.

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

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

(v) Tomorrow will be a cloudy day.

Answer:

(i) It is certain to happen.

(ii) It can happen but not certain.

(iii) It is impossible because there are only six faces on a dice marked as 1, 2, 3, 4, 5, 6 on it.

(iv) It can happen but not certain.

(v) It can happen but not certain.

2. There are marbles in a box with numbers from marked on each of them.

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

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

Answer:

Total marbles from marked in a box

Probability

(i) The probability of drawing a marble with number

(ii) The probability of drawing a marble with number

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

Answer:

Probability

A coin has two possible outcomes Head and Tail.

Probability of getting Head or Tail is equal.