NCERT Class X Chapter 14: Probability Example 1
NCERT Class X Chapter 14: Probability Example 1
Question:
Find the probability of getting a head when a coin is tossed once. Also find the probability of getting a tail.
Given:
A coin is tossed once.
To Find:
The probability of getting a head and the probability of getting a tail.
Formula:
Probability = Outcome we want Total Outcomes
Solution:
If a coin is tossed, (like in cricket) the result we will either head (H) or tail (T).
So, total possible outcomes when a coin is tossed once are {H, T}.
The outcome we want is called favorable outcomes
Number of favorable outcomes for getting a head = 1 (H).
Because if a coin is tossed 1 time it can be head only once.
Probability of getting a head =
Outcome we want
Total Outcomes
Probability of getting a head =
Number of favorable outcomes for getting a head
Total Outcomes
Probability of getting a head = 1
2
Number of favorable outcomes for getting a tail = 1 (T).
Probability of getting a tail =
Outcome we want
Total Outcomes
Probability of getting a tail =
Number of favorable outcomes for getting a tail
Total Outcomes
Probability of getting a tail = 1
2
Result:
The probability of getting a head is 1 2 and the probability of getting a tail is 1 2 .
Comments
Post a Comment