1C1+3C3+5C5+..=? Share with your friends Share 0 Neha Sethi answered this Dear student As we know that nCr=n!n-r!r!So,1C1+3C3+5C5=1!1-1!1!+3!3-3!3!+5!5-5!5!=1+1+1 As 0!=1=3 Regards 1 View Full Answer
