Answer:
1a. 1/4
1b. 7/18
Step-by-step explanation:
1a. P(Oliver or Gemma) = P(Oliver) + P(Gemma)
= 1/6 + 1/12
=2 + 1 /12
= 3/12 or 1/4 (divide the numerator and denominator by 3 to get 1/4)
1b. P(Rey or Oliver) = P(Rey) + P(Oliver)
= 2/9 + 1/6
= 12 + 9 /54
= 21/54 or 7/18 (divide the numerator and denominator by 3 to get 7/18
I don't know if my solutions are correct, but yeah. Good luck.