550
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The next number in the series 1 2 4 8 10 20 22 is
20
20
22
The answer is: 12.
The next number in the series 1 2 4 8 10 20 22 is
25-1=24 24-2=22 22-3=19 19-4=15 15-5=10 The next number in the series is 10.
20
12
20
39
18
500
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20
20
22