英语翻译suppose p(n) is a propositional function.determine for w

英语翻译suppose p(n) is a propositional function.determine for which nonnegative integers in the statement p(n) must be true ifa) p(0) is true; for all nonnegative integers n,if p(n) is true,then p(n+2) is true谁能帮忙看看这题目神马意思...到底想让我干嘛?