Question

3,21,5,19,8,16,12,12,17,?
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Answer 1

Answer:

after 17 the next sequence is 7,23,1

Step-by-step explanation:

because there is a sequence

3+2= 5

21-2=19

5+3=8

19-3=16

8+4=12

16-4=12

12+5=17

12-5=7

17+6=23

7-6=1