Two unbiased coins are tossed simultaneously.Find the probability of getting ` (i) At most two heads `
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Step-by-step explanation:
'Atmost' means the number of heads should not exceed 2.
Total no. of outcomes when two unbiased coins are tossed=HH ,HT, TH, TT=4
No. of favourable outcomes=HH ,HT ,TH ,TT=4
(We have to include TT because no. of heads can range between 0-2)
Therefore,Probability=(Favourable outcomes/Total outcomes)
=4/4=1 ans.
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