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junior college 2 | H2 Maths
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Need help with (b)
Date Posted: 2 years ago
Views: 272
Think about the scenarios of what x1 and x2 can be when X1 - X2 >= 5.
X must minimally be 2 (1 dot on disc and 1 dot on die) and can only be max 8 (2 dot on disc and 6 dot on die)
Hence, there can only be 3 scenarios which each scenario probability can be find separately.
As each of these scenarios are mutually exclusive, you can then sum them together to get the answer.
X must minimally be 2 (1 dot on disc and 1 dot on die) and can only be max 8 (2 dot on disc and 6 dot on die)
Hence, there can only be 3 scenarios which each scenario probability can be find separately.
As each of these scenarios are mutually exclusive, you can then sum them together to get the answer.
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Date Posted:
2 years ago
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