Good Batteries
You are given 8 batteries, 4 of which are full and 4 empty, and a kids’ toy that needs two batteries to start working. You have maximum 7 trials to get the toy to work (such that on the 7th trial it will work), what’s your strategy?
![](https://content.instructables.com/ORIG/FI8/5YLC/JYP2U98E/FI85YLCJYP2U98E.jpg?auto=webp&fit=bounds&frame=1&height=1024&width=1024auto=webp&frame=1&height=300)
You are given 8 batteries, 4 of which are full and 4 empty, and a kids’ toy that needs two batteries to start working. You have maximum 7 trials to get the toy to work (such that on the 7th trial it will work), what’s your strategy?
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