The question is how many 8-bit strings have either the second or the fourth bit 1 (or both)?(adsbygoogle = window.adsbygoogle || []).push({});

I know the soulution is 3*2^6 but why??

Also this question how many 8 bit strings begin and end with 1? is it 8C2?

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# Homework Help: Counting methods help please

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