What is the sample space if we just want to record the number of times we flip heads? A. {H, T,HH, HT, TH, TT}
B. {HH, HT, TH, TT}
C. {0,1,2}
D. {H, T}

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.