Question

The list below shows all of the possible outcomes for flipping four coins.HHHHHHHTHHTHHHTTHTHHHTHTHTTHHTTTTHHHTHHTTHTHTHTTTTHHTTHTTTTHTTTTWhat is the probability of getting the same number of heads and tails?StartFraction 1 over 8 EndFractionOne-fourthStartFraction 3 over 8 EndFractionThree-fourths

Answer 1

If we have 4 coins to have the same number of heads as tales we have to have 2 o each so we can look in the list the options are:

HHTT, HTHT, HTTH, THHT,THTH and TTHH so we have 6 options and in total there are 16 option so the probability will be:

`(6)/(16)=(3)/(8)`

So the probability is 3/8