What is the answer? Children's shoes I think the first question should be A, one likes to have 70 votes. The first condition says that 40 votes come from there, and the remaining 30 votes are equivalent to 15 people. The second condition, because I don't know the uncertain ticketing situation, I can't infer it. The second question, the total probability is 2*2*2-* * 8 cases, all heads or tails, 2/8. The third question, condition 1 and condition 2 are counterexamples, which shows that 1 and 2 are not sufficient. If the two conditions are together, you can also cite counterexamples, 29 and 65, so choose E.