slove queation no. 1
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total no of outcomes = 350
1)P(getting 3 tails) = 55/350
=11/70
2)P(getting 2 tails)= 95/350
= 19/70
3)P(getting one tail) = 120/350
= 12/35
4) P(getting no tail) = 80/350
= 8/35
I hope it helps you
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