2 coins are tossed simultaneously 450 times.If we get 2 heads 80 times,1 head 220 times and no head 150 times.Then find the probablity of getting one or more than one head.

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ummm
 
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okk
 
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p(getting 1 and more than 1 head)=220+80/450
                                                      =2/3
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The no of favourable outcomes=300(400-150)(total outcomes -no heads).  Therefore probability of getting one or more head=no of favourable outcomes/total outcomes=300/450=2/3                
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the answer is 2/3
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