Need Math Magician . . . .?

Question

I'm trying to figure three things out, just for fun. Anybody know any of the three?

1) Three cards from an ordinary deck of cards are placed face down in a row. To the right of a queen is a queen or two. Th the left of a queen is a queen or two. To the left of a heart is a spade or two. To the right of a spade is a spade or two. Name the three cards. *I can't figure out if the 'two' means the card number two, or if it means 'a spade or two' as in, could be more than one spade. . . .

2) What is the reason for this logical sequence?
8 5 4 9 7 6 3 2 0

3) What are the two next letters in the following series?
A E F H I K L M

Answer 1

From the information give I've come up with these possibilities:
Q - Queen.
2 - Number two card.
S - Spade.
H - Heart.

You are given two of the four card types, shade and heart. You can't have two of the same suit in a deck. This suggests that the number 2 card is used.

QS - QS - 2H
2S - QS - QH
QS - 2S - QH
2S - QS - 2H

Part 2: Unsure.

Part 3: All straight lines used in the letters.

Answer 2

1) pass.

2) in alphabetical order of their names, eight . . . zero.

3) miss out letters with curves, therefore N T.