1) Make a function that returns #t if the list is not null, and #f is the list is null.
	(notnull? '()) -> #f
	(notnull? '(a b c))  -> #t


2) Make a function that counts the number of items in a list.
	(count '()) -> 0
	(count '(a b c )) -> 3

3) Make a function that returns the last item in a list.
	(last '()) -> '()
	(last '(a b c)) -> c


4) Make a function that deletes the last item in a list.
	(allbutlast '(a)) -> '()
	(allbutlast '(a b c d)) -> '(a b c)


5) Make a function that deletes the Nth item from a list.
	(delete 2 '(a b c d)) -> '(a b d)
	(delete 0 '(a b c d)) -> '(b c d)
	(delete 9 '(a b c d)) -> error

6)  Write Microsoft word in Scheme.