21 Feb '15 06:53>
An NZ supermarket chain is offering collectable cards with purchases.
With every $10 spent you get 4 cards (all different).
There are 108 cards to collect.
How much do you have to spend before you are likely
(better than 50% chance) to obtain a set?
This is a real problem and I'm very keen to know the answer!
THANKS
With every $10 spent you get 4 cards (all different).
There are 108 cards to collect.
How much do you have to spend before you are likely
(better than 50% chance) to obtain a set?
This is a real problem and I'm very keen to know the answer!
THANKS