Fun, innovative designs. Just a small math error. My card was supposed to be for a "Funny Math Geek (19TH Birthday.... The formula as written on the card ( summation from 2 to 2) gives an answer of 7 years old. If the summation went from 2 to 3, it would give 19. Actually, I'm 78 today, but that's my artist brother's problem; he sent me the card.
