Prove that nc9=nc8 then nc17=?
Answers
Answered by
1
nc9=nc8
since we know ncr=n!÷r!×n-r!
n!÷9!×n-9!=n!÷8!×n-8!
by simplification we get,
1÷9=1÷n-8
therefore n=17
thus,17c17=1
since we know ncr=n!÷r!×n-r!
n!÷9!×n-9!=n!÷8!×n-8!
by simplification we get,
1÷9=1÷n-8
therefore n=17
thus,17c17=1
Similar questions