(a)Give an example of a mathematical truth that is consistently true real world(b) an example of a mathematical truth by way of a logical proof(c)an example of a mathematical truth by convention or...

(a)Give an example of a mathematical truth that is consistently true real world (b) an example of a mathematical truth by way of a logical proof (c)an example of a mathematical truth by convention or by tradition (d) an assumed truth in mathematics that is not true in general