Menu Close

solve-in-N-A-n-4-A-n-3-

Tinku Tara 0 Comments
Pin




Question Number 87731 by mathocean1 last updated on 05/Apr/20
solve in N A_n ^4 =A_n ^3
solveinNAn4=An3
Commented by Tony Lin last updated on 06/Apr/20
n(n−1)(n−2)(n−3)=n(n−1)(n−2) n(n−1)(n−2)(n−4)=0 ∵ n≥4 ∴n=4
n(n−1)(n−2)(n−3)=n(n−1)(n−2)n(n−1)(n−2)(n−4)=0∵n⩾4∴n=4

Pin

Leave a Reply

Your email address will not be published. Required fields are marked *