Probability

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A.)AN UNBIASED COIN IS FLIPPED 5 TIMES. WHAT IS THE PROBABILITY OF GETTING EXACTLY 1 HEAD ON THE 5 TRIALS?
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<br>Total number of combinations possible = 2^5 = 32
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<br>The combinations which will give exactly 1 Head are:
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<br> H T T T T
<br> T H T T T
<br> T T H T T
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