Physics, 21.10.2020 17:01, kenz391

How many strings of length 10 over the alphabet (a, b, c, d] have at least one b somewhere in the string? a) 310
b) 410 - 310
c) 10.4
d) 10.39

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How many strings of length 10 over the alphabet (a, b, c, d] have at least one b somewhere in the st...