Discrete Math please assist

A coin is flipped 8 times where each flip comes up either heads or tails. How many possible outcomes contain the same number of heads and tails? Select one: Oa. 1 Ob. 8 O c. 70 O d. 1,680 O e. 24Four people are to be selected at random from a group of four couples. In how many ways can this be done given that the selection must include one member from each couple? Select one: ' a. 24 X b. 32 ' c. 70 d 16 e 8 In how many distinguishable ways can the product x2y3z be written without using exponents? Select one: a. 720 b. 360 ' c. 60 " d. 120