What letters replace the question marks in this series?

ABC
?DF
D?L
HP?

Below, we've listed the planets in the Solar System in a different order. According to this order, in which order should the two final planets appear?

Jupiter, Saturn, Uranus, Neptune, Earth, Mars, Pluto, ?, ?.

Which of these numbers does not belong with the others?

31,556,926
234,567.876
525,948.766
8,765.81277
365.242199
52.177457
12

Amy was pregnant with her 7th child. Everyone was excited. She had named her children Sandy, Adam, Denton, Edward, Dina and Ira, in their order of birth and according to a specific rule. She knows her 7th child will be a girl. Which of the following names is she likely to use, and why?

Mary
Kimberly
Rachel
June
Yolanda

What number should finish this sequence?

23, 14, 19, 6, 20, ?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: It's behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which ...