3. "If ...... then" symbol instead of by. → The value of truth, which contains linear praphot. "If" (p → q) has only one case is false, that is, p is true and q is false.
3. "If you ......" wrote wildcards. → The truth of any proposition composites with an "if, then" (p → q) is the only one that is actually false if p is true and q is false.
3. "If... Then" written symbols instead of by - >The truth value of the proposition of any assembly connected with "if" (P - > q) have a truth-value false cases only. That is, is. P true and Q is false.