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obtaining head in coin
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A coin is tossed 10 times Find the probablity of obtaining head at least once
probability
asked
Dec 24, 2017
in
Quantitative Aptitude
by
Uma Maheswari
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Probability of obtaining head at least once = 1  ( Probability of obtaining tail all 10 times)
= 1  (1/2)^10
= 1023/1024
Therefore , probability is 1023/1024
answered
Dec 24, 2017
by
sravani inturi
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150
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Jan 31, 2018
by
Sukanya Das
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+2
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Sample space size $= 1024$
No. of favourable cases $= 10241=1023$
Probability $= \frac{1023}{1024} =99.90 \%$
answered
Dec 24, 2017
by
saxena0612
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1023/1024
answered
Apr 25, 2018
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shaloo
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