Question

A coin is tossed three times Then the probability that at least one tail occurs is answer +1 non medical math da​

Answer 1

Answer:

hi friend

A coin can only get heads or tails. So you have 1/2 chance of getting either heads or tails.

Well simplify tails to T and heads to H.

The possibilities are:

T H H

H T H

H H T

T T H

T H T

H T T

T T T

H H H

As you can see, there is only one cenario in throwing all the coins where there isnt a tails. In the scenario, you’d need all three coins to be heads. The chances are for one given coin to be heads is 1/2, so the chance for all three to have that same result would be (1/2)^3 ( as a probability tip, anytime you must consider that the result something must happen AND something else must happen, you multiply the odds of those two things happening; the chances that the first coin is heads and the second coin is heads and the third coin is heads equates to 1/2*1/2*1/2 = (1/2)^3 = 1/8 )

So you have a 7/8 chance that you will have at least one tails. If you want a % answer, just multiply 7/8 * 100.

thanks..