Question

If four coin are tossed . Find probability of getting atleast two head.​

Answer 1

Answer:

The probability of 2 heads is 6/16 = 3/8 = 37.5%.

To find at least two heads, you will need to add on the probability of 3 heads and also 4 heads. to your answer for exactly two heads.

The probability of 3 heads is 4/16 (or 1/4) because you have HHHT, HHTH, HTHH, THHH, or 4C3

Now the probability of 4 heads is 1/16, because the only option is HHHH.

Add 6/16 + 4/16 + 1/16 = 11/16 or 68.75%

hope will be helpful ☺️

Answer 2

Probality>0.5

Step-by-step explanation:

A coin is tossed 4 times,

Probability of getting "at least 2" can be getting 2 tails, 3 tails and 4 tails.

Thus, probability >0.5.

hope it helps