Question

probability of getting a head when two unbaised coin are tossed simultaneously is​

Answer 1

Answer:

When two coins are tossed simultaneously then the possible outcomes obtained are {HH,HT,TH,TT}.

Here H denotes head and T denotes tail.

∴, a total of 4 outcomes obtained on tossing two coins simultaneously.

Consider the event of obtaining at the most one head. At most one head is obtained means either no head is obtained or one head is obtained.

The outcome  favourable to no head obtained is {TT}

The outcome favourable to one head obtained is {HT,TH}

∴, the event of obtaining at most one head has 3 favourable outcomes.  

These are TT,HT and TH.

∴, the probability of obtaining at most one head =  

4

3

​

Answer 2

Step-by-step explanation:

MATHS

Two unbiased coins are tossed simultaneously.find the probability of getting at most 1 head?

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ANSWER

When two coins are tossed simultaneously then the possible outcomes obtained are {HH,HT,TH,TT}.

Here H denotes head and T denotes tail.

∴, a total of 4 outcomes obtained on tossing two coins simultaneously.

Consider the event of obtaining at the most one head. At most one head is obtained means either no head is obtained or one head is obtained.

The outcome favourable to no head obtained is {TT}

The outcome favourable to one head obtained is {HT,TH}

∴, the event of obtaining at most one head has 3 favourable outcomes.

These are TT,HT and TH.

∴, the probability of obtaining at most one head =

4

3