9 . n7 20. 1 1 (In 3)3 (In 4)4 (In 5)5 + ( In 6) 6+ ... 00 Identify the two series that are the same. Circle your answers. 00 21. (a) 00 (b ) n5n n=0 (n + 1)! (c) (n + 1)5n+1 n=1 n = 0 ( n + 1 ) ! 00 22. (a ) (-1)n (-1)n-1 n=0 (2n + 1)! (b) (- 1 )n - 1 L ( 2n - 1)! (c) n = 1 n=1 (2n + 1)! Find the value of x for which the series converges. 23. 2 (* )" n=0 24. " (- 1) ( x + 1)n n= 1 n Show that the Ratio test is inconclusive for the p -series 1 25. un3/2 n=1