Question

Ramesh tosses two different coins simultaneously. Find the probability of getting (i)at least one tail.(ii) 2 tails

Answer 1

n(s)=4

since {HH,HT,TH,TT}

1.n(A)={HT,TH,TT}

hence p(A)=3÷4

2.n(B)={TT}

hence p(B)=1÷4