If a coin is tossed 100 times out of which 65 times we get head and 35 times tail probability that of not getting a tail is

Number of time head ocurrs = 65Number of times tail ocurrs = 35Number of favourable outcomes = 65Total number of possible outcomes = 100Required probability = Number of favourable outcomesTotal number of possible outcomes=65100=0.65

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probability of not getting tails=number of getting head/total number of tosses done
=65/100
=13/20
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