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The difference between 2 and 9 is 7. The difference between 9 and 5 is 4. So 2+7=9. 9-4=5. 5+8=13. 13-3=10. 10+9=19. 19-2=17. This means that the next number would be 27, as 17+10=27. Notice the pattern?

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16y ago
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Wiki User

13y ago

This ones pretty easy. I put some #s in bold to make them clear

+7 -4 +8 -3 +9 -2 the next is +10

17+10=27

Its 27

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Wiki User

13y ago

27

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Q: Which number best completes the sequence below 2 9 5 13 10 19 17?
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