Hey folks, my friend uses this app called Timehop which periodically posts these little puzzles, and I thought some of you would find them fun to complete. Here's the link: https://www.timehop.com/puzzleparty
So far I've solved #1 and #3 (answers in the comments) and I'm working through #4. #2 has eluded me so far but I'm hoping I'll figure it out eventually.
Puzzle #1 Answer
The key here is to notice that each of the five digits are counting down from 9 to 0, with some of the pieces of individual digits missing from the display. I wrote out all the sequences and identified the numbers with blank sections, and then combined all the missing sections for each column. Each one returned a single letter, giving us the five letter code:
Code:
CHEER