A class consist of 40 girls & 60 boys. In how many ways a president , vice president , treasurer , secretary be chosen. If the treasurer must be a girl & secretary must be a boy and a student cannot hold more than one position.
Answers
Answered by
37
Total number of students =100
Treasurer to be selected from 40 girls= 40C1= 40 ways.
Secretary to be selected from 60 boys = 60 C1= 60 ways.
now Total student left for president and vice president position= 100-2=98.
so,
number of ways president can be selected =98C1= 98 ways.
and
number of ways vice president can be selected = 97C1=97ways.
Treasurer to be selected from 40 girls= 40C1= 40 ways.
Secretary to be selected from 60 boys = 60 C1= 60 ways.
now Total student left for president and vice president position= 100-2=98.
so,
number of ways president can be selected =98C1= 98 ways.
and
number of ways vice president can be selected = 97C1=97ways.
Answered by
5
Answer:
40*60*98*97
Step-by-step explanation:
tresurer girl = 40
secreatery boy= 60
total 100
2 already choosen
left 98
now president = 98
vice pricedent 97
total 40*60*98*97
Similar questions