Classify the following events as certain to happen, impossible to happen, may or may not happen:
(a) Getting a number less than 1 on throwing a die.
(b) Getting head when a coin is tossed.
(c) A team winning the match.
(d) Christmas will be on 25 December.
(e) Today the moon will not revolve around the earth.
(f) A ball thrown up in the air will fall down after some time.
Solution:
We have to classify the given events.
(a) Getting a number less than 1 on throwing a die.
When a die is thrown, the possible events are 1, 2, 3, 4, 5, 6
Getting a number less than 1 is not possible.
Therefore, Getting a number less than 1 on throwing a die is impossible to happen.
(b) Getting head when a coin is tossed.
When a coin is tossed, the possible event is head or tail.
On tossing a coin, there is a possibility of getting a tail or a head.
Therefore, Getting head when a coin is tossed may or may not happen.
(c) A team winning the match.
It is a general rule that out of two teams competing in a match, one will win and other will lose.
A particular team winning or losing the match is uncertain.
Therefore, A team winning the match may or may not happen.
(d) Christmas will be on 25 December.
We know that Christmas is celebrated all over the world on 25 December.
It is a Sure event.
Therefore, Christmas will be on 25 December is certain to happen.
(e) Today the moon will not revolve around the earth.
It is a universal truth that the moon will revolve around the earth.
Therefore, Today the moon will not revolve around the earth. It is impossible to happen.
(f) A ball thrown up in the air will fall down after some time.
Any object thrown up in the air will fall down automatically due to the gravity of the earth.
Therefore, A ball thrown up in the air will fall down after some time is certain to happen.
✦ Try This: Classify the following event as certain to happen, impossible to happen, may or may not happen: The Sun rises in the East
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 3
NCERT Exemplar Class 7 Maths Chapter 3 Problem 63
Classify the following events as certain to happen, impossible to happen, may or may not happen: (a) Getting a number less than 1 on throwing a die. (b) Getting head when a coin is tossed. (c) A team winning the match. (d) Christmas will be on 25 December. (e) Today the moon will not revolve around the earth. (f) A ball thrown up in the air will fall down after some time.
Summary:
(a) Getting a number less than 1 on throwing a die is impossible to happen, (b) Getting head when a coin is tossed may or may not happen, (c) A team winning the match may or may not happen, (d) Christmas will be on 25 December is certain to happen, (e) Today the moon will not revolve around the earth is impossible to happen, (f) A ball thrown up in the air will fall down after some time is certain to happen
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