Q1
What is the probability formula?
AFavourable outcomes ÷ total outcomes
BTotal outcomes ÷ favourable outcomes
CFavourable + total outcomes
DFavourable - total outcomes
ICSEClass 8 (ICSE)MathematicsCh 23 · Topic 2
Practice and Revision - Probability
Let us practise and revise what we learned about probability. Probability quantifies the likelihood of events occurring, calculated as favou
Core concept
Probability is calculated as P(event) = (number of favourable outcomes) ÷ (total number of possible outcomes).
How it works
For a fair coin toss, the probability of heads is 1/2, since there's one favourable outcome (heads) out of two possible outcomes.
Why it matters
For rolling a die, the probability of getting an even number is 3/6 (or 1/2), since 2, 4, and 6 are three favourable outcomes out of six.
Key detail
Understanding probability helps us make informed decisions and predictions in games, sports, weather forecasting, and everyday situations.
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Quick notes
• Probability = favourable outcomes ÷ total outcomes.
• Coin toss probability of heads is 1/2.
• Die roll probability of even number is 3/6 or 1/2.
• 2, 4, 6 are the even outcomes.
• Probability ranges from 0 to 1.
• It helps make informed predictions.
• It's used in games and weather forecasting.
• Practice builds probability calculation skills.