Sequence Jeopardy

Ari or Geo

100

5, 6, 7......

Ari +1 

200

4, 24, 144.......

Geo x 6 

300

12, 7, 2.......

Ari -5 

400

15, 11, 7.........

Ari -4 

500

2, 4, 8, 16........

GEO x 2

What is the next number in the sequence

100

25, 15, 5.......

Ari - 10 

Next number = -5

200

11, 7, 3.......

Ari -4 

Next number is = -1

300

2, 4, 8........

Geo x 2

Next number = 16 

400

4, 16, 64.......

Goe x 4

Next number = 256

500

-4, 12, -36......

Goe x -3

Next Number = 108 

What is the missing number ?

100

-23, M, -13, -8...... 

M= -18 

200

37, 46, 55, M, 73 .........

M= 64 

300

4, M, 64, 256 ......

M= 16 

400

-6, M, 2, 6........ 

M= -2 

500

-4, 12, M, 108......

M= -36 

what is the CD or CR

100

1, 5, 25, 125......

CR= x5 

200

1, 4, 9, 16.....

There is no CD or CR 

300

40, 43, 46 ......

CD = +3

400

300, 30, 3 .....

CR= 1/10 

500

64, 16, 4......

CR= 1/4