Probability
ICSE · Class 8 · Mathematics
All formulas from Probability in ICSE Class 8 Mathematics. Key equations, constants, and identities for board exam preparation.
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Formulas
Core Ideas and Definitions
P(E) = m/n
P = Number of favourable outcomes / Total number of outcomes
Standard Outcome Counts
Coin tossed once: 2 outcomes
Coin tossed twice: 4 outcomes
Coin tossed three times: 8 outcomes
Die thrown once: 6 outcomes
Die thrown twice: 36 outcomes
Solved Probability Patterns
P(getting an even number) = 3/6 = 1/2
P(getting a multiple of 3) = 2/6 = 1/3
P(not a multiple of 3) = 4/6 = 2/3
P(no tail) = 1/4
P(two tails) = 1/4
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