Gujarat Board GSEB Textbook Solutions Class 7 Maths Chapter 3 Data Handling Ex 3.4 Textbook Questions and Answers.

## Gujarat Board Textbook Solutions Class 7 Maths Chapter 3 Data Handling Ex 3.4

Question 1.

Tell whether the following is certain to happen, impossible, an 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.

Solution:

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?

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

Solution:

Total number of marbles = 6

∴ Total number of possible outcomes = 6

(i) Probability of drawing marble with number 2,

p(2) = \(\frac { 1 }{ 6 }\)

(ii) Probability of drawing marble with number 5,

p(5) = \(\frac { 1 }{ 6 }\)

Question 3.

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

Solution:

Since there are two faces of a coin, head (H) and tail (T).

When a coin is tossed, then either a ‘H’ or a ‘T’ conies.

∴ Successfully achieved outcome = 1

Total number of possible outcomes = 2

[ ∵ Head + Tail =1 + 1= 2 ]

∴ Required probability = \(\frac { 1 }{ 2 }\).