-alternatives

51. conv. by alt. ser.

52. div, harmonic
	-int. test
	-p-series

53. conv p-series (p=3/2)
	-int. test

54. conv geom. ( |r| < 1 )
	-ratio

55. div by nth term (lim an > 0)
	-lim comp (2 + 2 + 2...)
	-direct comp w/ harmon.

56. div by lim comp to harmonic
	-int. test

57. div geom. ( |r| >= 1)
	-ratio possible
	-nth term

58. conv p-series (p=3/2)
	-int. test

59. ratio test, conv.
	lim. comp (1/2)^n

60.  ratio test, div.
	lim. comp (2)^n
	nth term

61. abs. conv. dir. comp. w/ (1/2)^n, conv. abs.

62. alt. series conv. 

63. ratio test, conv.

64. direct comp. to p-series (1<p<2) conv. 

65. ratio test conv. 

66. ratio test div.
	-nth term