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by Anurag@Gurome » Sat Aug 20, 2011 7:11 pm
candrapetra wrote:How many n-digitbinary sequences can be formed so that no two consecutive digits are the same ?
I'm assuming that the binary sequence is made entirely of 0's and 1's.

Now, if the sequence starts with 1 then it must be like 101010101...
And, if the sequence starts with 0 then it must be like 010101010...

So whatever is the value of n, only two such sequence is possible.
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