A fair coin is tossed repeatedly. If head and tail appear alternati...

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A fair coin is tossed repeatedly. If head and tail appear alternatively on first 7 tosses; then the probability that head appears on the eighth toss is
(a) \( 1 / 2 \)
(b) \( 1 / 128 \)
(c) \( 1 / 256 \)
(d) \( 7 / 256 \)
\( \mathrm{P} \)
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