Class assignment problem backtracking

#1

i didn’t understand the problem…

#2

Hi @shivabansfore123,
In this problem you have tell the number of n size strings that can be formed with ‘a’ and ‘b’ with no b together … for example for n=3 it can be aaa , aab,aba,baa,aba. However abb will be invalid as two b are together .so the answer is 5 .

#3

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