There are 8 balls . 7 of them weigh the same . 1 of them has a different weight , -LRB- you do n't know if it 's heavier or lighter -RRB- . How do you find the odd ball with 2 weighs ?
If 1 = Single , 2 = Double , 3 = Triple , 4 = Quadruple , what are 5 , 6 , 7 , 8 , etc. called ?