My remote control needs two new batteries, but when I went to get replacements I found that the four good batteries got mixed in with four bad batteries. The only means of determining if the batteries are good is to put two into the remote and see if it works. The remote works with two good batteries and is unresponsive if I have at least one bad battery in it.
What is the minimum number of tries I need to guarantee that I get two good batteries?
(In reply to re: my solution
Yes, after at most 7 tries you know of two good batteries, but you still need to put them in to get a working remote (that is, to GET two good batteries). It's an interpretation question.
Posted by Charlie
on 2013-11-12 00:11:51