Probability+Independent events

[Himel.S]

The events C and D are independent. If P(C or D) = 0.6, and P(C) = 0.5, What will be P(D)?
(Source: ETS Official Guide)

[Leaderboard]

How to Ask Better GRE Questions on Forums

Since GregMat (who is a very chill person) doesn’t have any specific formatting rules when it comes to asking questions on the forums, I feel like there should at least be a reference text of some sort that can help people ask better questions and make the process more enjoyable for those who try to answer them. The Golden Rule: Imagine You’re Trying To Answer the Question Before you post your question about GRE preparation, practice questions, or strategies, try to put yourself in the shoes of…