An invalid argument with one true premise, one false premise, and a true conclusion.

So if a valid argument does have a false conclusion, it cannot have all true premises. Thus at least one premise must be false. ... If an invalid argument has all true premises, then the conclusion must be false. FALSE: It is possible for an invalid argument to have all true premises and a true conclusion.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

because growing process had stoped after 4-5 year