A snail falls 5 meters deep in a well, every day he manages to crawl 3 meters up but falls also 2 meters down, how many days does it take the snail
![5-meter tall transformers 'guard' Nanjing expo (1/2) - Headlines, features, photo and videos from ecns.cn 5-meter tall transformers 'guard' Nanjing expo (1/2) - Headlines, features, photo and videos from ecns.cn](http://www.ecns.cn/visual/hd/2013/04-10/U364P886T15D17079F104DT20130410134804.jpg)
5-meter tall transformers 'guard' Nanjing expo (1/2) - Headlines, features, photo and videos from ecns.cn
![Alfons López Tena 🦇 on Twitter: "If you lack a giraffe at hand to measure Iceland's asteroid, which you shouldn't, try an Allosaurus fragilis instead https://t.co/3HxDcXzZ4h" / Twitter Alfons López Tena 🦇 on Twitter: "If you lack a giraffe at hand to measure Iceland's asteroid, which you shouldn't, try an Allosaurus fragilis instead https://t.co/3HxDcXzZ4h" / Twitter](https://pbs.twimg.com/media/FN6TdEaXIAstWTc.jpg:large)
Alfons López Tena 🦇 on Twitter: "If you lack a giraffe at hand to measure Iceland's asteroid, which you shouldn't, try an Allosaurus fragilis instead https://t.co/3HxDcXzZ4h" / Twitter
![5 Meters Giant Inflatable Cowboy, 16 Feet Tall Inflatable Cowboy For Outdoor Advertising Events-inflatable Toy - Inflatable Toys - AliExpress 5 Meters Giant Inflatable Cowboy, 16 Feet Tall Inflatable Cowboy For Outdoor Advertising Events-inflatable Toy - Inflatable Toys - AliExpress](https://ae01.alicdn.com/kf/HTB1J1LBXinrK1RjSsziq6xptpXaj/5-meters-giant-inflatable-cowboy-16-feet-tall-inflatable-cowboy-for-outdoor-advertising-events-inflatable-toy.jpg)
5 Meters Giant Inflatable Cowboy, 16 Feet Tall Inflatable Cowboy For Outdoor Advertising Events-inflatable Toy - Inflatable Toys - AliExpress
![Paraceratherium, with some specimens reaching 5 meters in height holds the record for largest ever land mammal. A distant relative of rhinos, these beasts weighed as much as 20 tonnes and lived Paraceratherium, with some specimens reaching 5 meters in height holds the record for largest ever land mammal. A distant relative of rhinos, these beasts weighed as much as 20 tonnes and lived](https://i.redd.it/a5rmzjai00lz.jpg)