if (m+n)P2 = 90 and (m-n)P2 = 30 then find m and n Share with your friends Share 10 Lovina Kansal answered this Dear student We have,Pm+n,2=90 and Pm-n,2=30Consider,Pm+n,2=90⇒m+n!m+n-2!=90⇒m+nm+n-1m+n-2!(m+n-2)!=90⇒m+nm+n-1=90Since 10×10-1=90So, m+n=10 ....(1)Consider,Pm-n,2=30⇒m-n!(m-n-2)!=30⇒m-nm-n-1m-n-2!m-n-2!=30⇒m-nm-n-1=30Since 6×6-1=30So, m-n=6 ...(2)Solving (1) and (2), we get m=8 and n=2 Regards 6 View Full Answer Atharva Gulhane answered this m=60 and n=30 -7
