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Consider the following experiment : Step 1. Flip a fair coin twice. Step 2. If the outcomes are (TAILS, HEADS), then output Y and stop. Step 3. If the outcomes are either (HEADS, HEADS) or (HEADS, TAILS), then output N and stop. Step 4. If the outcoms are (TAILS, TAILS), then go to Step 1.. The probability that the output of the experiment is Y is 1k. Then k is

Answer» Consider the following experiment :
Step 1. Flip a fair coin twice.
Step 2. If the outcomes are (TAILS, HEADS), then output Y and stop.
Step 3. If the outcomes are either (HEADS, HEADS) or (HEADS, TAILS), then output N and stop.
Step 4. If the outcoms are (TAILS, TAILS), then go to Step 1..

The probability that the output of the experiment is Y is 1k. Then k is


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