In how many ways can the debating club coach select a team from six grade 11 students and seven grade 12 students if the team has
a) four members?
b) four members, only one of whom is in grade 11?
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Step-by-step explanation:
Option number (b)________""_"_
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a) ¹³C⁴ = 715
b) ⁶C¹ = 6, ⁷C³ = 35
=> 6×35 = 210
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