A class consists of 15 boys and 12 girls. They want to elect officers so that...
A class consists of 15 boys and 12 girls. They want to elect officers so that the president and secretary are girls, and the vice president and treasurer are boys.
Homework Answers
Ans:
As order matter here so,we will use permutations.
Number of ways to elect president and secretary=12P2=12*11=132
Number of ways to elect president and treasurer=15P2=15*14=210
So,Number of ways to elect officers=132*210=27720
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