#83

A Half-Truth

 

Write a function which takes a variable number of booleans. Your function should return true if some of the parameters are true, but not all of the parameters are true. Otherwise your function should return false.

	(= false (__ false false))
	(= true (__ true false))
	(= false (__ true))
	(= true (__ false true false))
	(= false (__ true true true))
	(= true (__ true true true false))