Brain Teaser

[bea_deans_girl]

A brain teaser to provide a moment or two of distraction. First correct answer wins... oh, I dunno, a cookie? Open to negotiations, of course.
answers screened


This is not a trick question. This is a real math problem so don't say that a bus has no legs, and there is no bus driver.

There are 7 girls in a bus.
Each girl has 7 backpacks.
In each backpack, there are 7 big cats.
For every big cat there are 7 little cats.

Question: How many legs are there in the bus?