In this video, Liz breaks down a logic question she encountered during a Facebook engineer interview.

This problem is part riddle and part math. It involves two glass balls and a building with 100 floors. We want to determine the highest floor a ball can be dropped without breaking them.

Without using any coding, Liz provides strategies for how to use logic and basic math skills to reason through a problem during an interview.

• 0:25 Problem overview
• 1:15 Breaking the problem down to subproblem
• 3:25 Binary approach
• 17:49 Using Gauss’s formula

#developer #interview-questions