by TylerD » Aug 11th, '06, 21:04
Haha Lawrence is incorrect. He guy said its very simple, and once we know the answer we will be kicking ourselves in the ass thinking how did we not catch that haha. I still dont know, however I cam up with maybe it has nothing to do with the math. Maybe has something to do with the teacher and her being 30. There are 4 students who are 5years old and the teacher being 30? Something like that maybe if that makes sense Im not sure. Ooooor haha another one
This could be advanced mathematics, so that they're not in the field of real numbers, but in the set congruento modulo 2, 5 or 10:
mod 2 gives: 4 x 5 = 0 x 5 = 0 = 30 (mod 2), [should be "identical to", i.e. an equivalence sign with 3 horizontal lines instead of two: =_
mod 5 gives 4 x 5 =4 x 0 = 0 = 30 (mod 5)
mod 10 gives 4 x 5 = 20 = 0 =30 (mod 10)
A lil' bit too farfetched I suppose