Oh no I don't see a flaw in that one, not at all... Except the fact that using calculator on biology test does rise suspicion doesn't it? Actually you can't use your calculator anywhere besides math and physics (And maybe few more classes depending on which school/college you're in)...

Not to mention that professors are not mentally retarded and that thing is obvious, if you only take one look at it... You've wasted a good calculator for that shit? You stupid fuck.