NCERT Solutions for Class 7 Maths Exercise 3.4 Chapter 3 Data Handling are given here in a simple PDF. This exercise of NCERT Solutions for Class 7 Maths Chapter 3 contains topics related to chance and probability. Probability is the likelihood that an event will occur and is calculated by dividing the number of favourable outcomes by the total number of possible outcomes. The simplest example is a coin flip. When you flip a coin, there are only two possible outcomes: the result is either heads or tails. Our expert teachers have formulated these solutions in a precise, comprehensive and detailed form. Learn more about these topics by solving the questions of NCERT Solutions for Class 7 Maths Chapter 3 Data Handling with the help of solutions provided here.
NCERT Solutions for Class 7 Maths Chapter 3 Data Handling – Exercise 3.4
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Access answers to Maths NCERT Solutions for Class 7 Chapter 3 – Data Handling Exercise 3.4
1. Tell whether the following is certain to happen, impossible, or can happen but not certain.
(i) You are older today than yesterday.
Solution:-
It is certain to happen.
(ii) A tossed coin will land heads up.
Solution:-
It can happen but not certain.
(iii) A die, when tossed, shall land up with 8 on top.
Solution:-
It is impossible because there are only six faces on a die, marked as 1, 2, 3, 4, 5, and 6 on it.
(iv) The next traffic light seen will be green.
Solution:-
It can happen but not certain.
(v) Tomorrow will be a cloudy day.
Solution:-
It can happen but not certain.
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 the number 2?
Solution:-
From the question, it is given that
There are 6 marbles in the box with numbers from 1 to 6 marked.
The probability of drawing a marble with the number 2 = Number of favourable outcomes/
Number of possible outcomes
= (1/6)
(ii) What is the probability of drawing a marble with the number 5?
Solution:-
From the question, it is given that
There are 6 marbles in the box with numbers from 1 to 6 marked.
The probability of drawing a marble with the number 5 = Number of favourable outcomes/
Number of possible outcomes
= (1/6)
3. A coin is flipped to decide which team starts the game. What is the probability that your team will start?
Solution:-
A coin has two faces, one is the Head, and the other one is the Tail.
Now, one team can choose either Head or Tail.
The probability of our team starting the first= Number of favourable outcomes/
Number of possible outcomes
= ½
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