two coins are tossed simultaneously find the probability of getting
1)atleast two heads
2)atmost two heads
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when two coins are tossed... 2 coins .. tossed twice means 2^2 =4 ..possible results are
(H,H) (T,T) (H,T) (T,H)... atleast and atmost two heads= 1/4
(H,H) (T,T) (H,T) (T,H)... atleast and atmost two heads= 1/4
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