Question

if nP2+nC3=135 then n=?
solve with the formula of permutation and combination.​

Answer 1

Step-by-step explanation:

nP2+nC3 = 135

n(P2+C3) = 135

n =

$\frac{135}{ p2 + c3}$

Answer 2

nP2+nC3 = 135

n(P2+C3) = 135

n =

\frac{135}{ p2 + c3}

p2+c3

135