Damn this puzzle kept me up for a while, but I finally got it. I love my determination.
There is a bus with 7 children inside of it
Each child has 7 rucksacks
In each rucksack there are 7 big cats
Every big cat has 7 small cats
Everything listed above is entirely in the bus
All objects are unique
There is no driver
Every child has 2 legs
Every cat has 4 legs
How many legs are in the bus?
Can you solve it? The solution is committed to memory, if you need help just post.