We know that: n C r = ⇒ n+1 C n = ⇒ n+1 C n = ⇒ n+1 C n = … ⇒ n+1 C n = ⇒ n+1 C n = ⇒ n+1 C n =n+1 Ans: n+1 C n =n+1

Evaluate: n+1 C n

We know that:

ⁿC_r =

⇒ⁿ⁺¹C_n=

⇒ⁿ⁺¹C_n= …

⇒ⁿ⁺¹C_n=

⇒ⁿ⁺¹C_n=n+1

Ans: ⁿ⁺¹C_n=n+1