Question

1.3.5.7.9...(2n-1) find the factorial​

Answer 1

Step-by-step explanation:

1.3.5.7.9....(2n-1)× 2.4.6.....2n

= ————————————————

2.4.6.8......2n

1.2.3.4.5.....(2n-1).2n

= ———————————

2(1.2.3.4....n)

2n!

————

2× n!