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secondary 4 | E Maths
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I don’t understand
Date Posted: 6 years ago
Views: 506
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done
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clear
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so get a black one is 5/9
get a red one is 4/9
。
get a black one and red one is 5/9×4/9=20/81
get a red one is 4/9
。
get a black one and red one is 5/9×4/9=20/81
Date Posted:
6 years ago
Never explain the details
You’re supposed to write the probability in the brackets of the tree diagram -.-“
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