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secondary 4 | E Maths
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Pls help with c
Date Posted: 2 years ago
Views: 173
Two cases.
Case 1: First one is music, second one is education
Prob = 5/12 x 3/12 (note: WITH replacement)
Prob = 15/144 = 5/48
Case 2: First one is education, second one is music
Prob = 3/12 x 5/12 (again, with replacement
Prob = 15/144 = 5/48
Total prob of getting one music and one education
= 5/48 + 5/48
= 10/48
= 5/24
Case 1: First one is music, second one is education
Prob = 5/12 x 3/12 (note: WITH replacement)
Prob = 15/144 = 5/48
Case 2: First one is education, second one is music
Prob = 3/12 x 5/12 (again, with replacement
Prob = 15/144 = 5/48
Total prob of getting one music and one education
= 5/48 + 5/48
= 10/48
= 5/24
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