2n!/n!=2^n(2n-1)(2n+3).......5×3×2
Answers
Answered by
7
Answer:
2n!/n!=[2n.2n-1.2n-2.2n-3........5.3.2.1]/n!
=[2n-1.2n-3.2n-5.........5.3.1][2n.2n-2.2n-4........4.2]/n!
[2n-1.2n-3.2n-5.......5.3.1][n.n-1.n-2....3.2.1]2^n.n!/n!
=2^n[2n-1.2n-3.2n-5......5.3.1]
Similar questions