Question

If two coins are tossed,find the probability of the folloing events.
1)Getting atleast one head.
2)Getting no head.
Use formula n(A) upon n(S).

Answer 1

probability = A/N
therefore, the outcomes are h,t ; t,h ; h,h
hence probability will be 1/4,1/4,2/4


outcomes t,t
probability 2/4

Answer 2

HERE IS THE ANSWER OF YOUR QUESTION :-
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# Outcomes that came after tossing the coin are are :-

HH, TH, HT, TT.

1) Total number of outcomes = 4.

Number of favourable outcomes = 3

P ( getting at least one head ) = Favourable outcomes / Toatal number of outcomes. [ A / S ]

= 3/ 4

2. Total number of outcomes = 4

Number of favourable outcomes = 1

P ( getting no head ) = A / S

= 1/ 4

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HOPE IT HELPS YOU.