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Math
100

What letter comes after A?

B

100

1+1

2

200

What letter comes before Z

Y

200

3+3


6

300

What letter comes after A,B,C, and D?

E

300

4+4

8

400

I am after D, but before G

e, F

400

5+5

10
500

What letter comes before A

None

500

20-13

7