<PRE><B>Question 113544</B>
There are 7 girls on a bus=====================14 legs
Each girl has 7 backpacks
In each backpack, there are 7 big cats=========7*7*4 legs
For every big cat there are 7 little cats======7^2*7*4 legs
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Question: How many legs are there in the bus? 
7^3*4 + 7^2*4 + 7*2
= 1372+ 196 + 14
= 1582 legs
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Cheers,
Stan H.
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