If a family has three children, then there are eight possible outcomes for the gender of the children (where F represents a female child and M represents a male child): S = {FFF, FFM, FMF, MFF, MMF, MFM, FMM, MMM} A three child family is selected at random. Assuming each of the eight above outcomes are equally likely, what is the probability that the randomly selected family has less than five male children?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Dis the correct answer