Home
Class 11
MATHS
Show that .^nCr+.^(n-1)C(r-1)+.^(n-1)C(...

Show that `.^nC_r+.^(n-1)C_(r-1)+.^(n-1)C_(r-2)=.^(n+1)C_r`

Promotional Banner

Similar Questions

Explore conceptually related problems

Show that ^nC_r+2. ^nC_(r-1)+ ^nC_(r-2)= ^(n+2)C_r

Prove that ""^(n-2)C_r+2* ""^(n-2)C_(r-1)+ ""^(n-2)C_(r-2)=""^nC_r

Prove that n.^(n-1)C_(r-1)=(n-r-1) ^nC_(r-1)

Prove that ""^nC_r+""^nC_(r+1)+""^(n+1)C_(r+2)=""^(n+2)C_(r+2)

Prove that .^(n-1)P_r+r.^(n-1)P_(r-1)=^nP_r .

Show that C_P- C_V = R

Prove that: ""^(n-1)P_r=(n-r)* ""^(n-1)P_(r-1)

Prove that .^(n+1)C_(r+1)+^nC_r+^nC_(r-1)=^(n+2)C_(r+1)

Find the value of .^(n-1)C_(n-1)

Find r in .^15C_r.^15C_(r-1)=11:5 .