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Q: 10 20 30 20 what number comes next?

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10

The next number in the sequence would be 25.

10

20

24

44

44

20

10 is one possibility.

Each number is multiplied by negative 2 to get the next number. 5 x -2 = -10 -10 x -2 = 20 20 x -2 = -40 -40x -2 = 80 So the next logical number in the series 5 10 20 -40 would be 80.

next in the sequence: 10,20,30,20

220

10

20 is the next number greater than 19. The next prime number greater than 19 is 23.

The next number in the series 1 2 4 8 10 20 22 is

20

22

It will be 106 because the number increase by increments of 5 10 15 20 25 30

44 this is based on a sequence of doubling the initial number then adding 2 to that result.

42

37

37

22 Double it, add two, double it, add two, etc.

40 5 10 20 40 80 160.......double the number each time.

The next number in this list would be 48. The reason this is the case is because the pattern is double to get the next number, then add 4 to get the next, then repeat. So 3 to 6 is a double, +4 gets you to 10. Double 10 to get 20, add 4 to get to 24. Double 24 to get 48, and then to continue you'd get 52, then 104, 108, 216 and so on