Question

please tell me this question ​

Answer 1

all tails = 3/6

at least 2 tails=2/6

Answer 2

Explanation:

when three coins are tossed .. the sample space will be :

S={HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}

• let A be the event of getting all tails.

A={TTT}

n(A)= 1

P= n(A)/n(S)

= 1/8

• let B be the event of getting at least 2 tails.

B={HTT, THT, TTH, TTT}

n(B)= 4

P= n(B)/n(S)

= 4/8

=1/2.