Which Number Best Completes the Sequence below Is 2 9 5 13 10 19 17?

Answer

If I am correct the next number in the sequence of 2, 9, 5, 13, 10, 19, 17 would be 27. The pattern seems to be going up when you add and going down when you subtract. The pattern I saw was: +7, -4, +8, -3, +9, -2, so the next would be +10 and -1.
Q&A Related to "Which Number Best Completes the Sequence below..."
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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The difference between 2 and 9 is 7. The difference
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The differences between the numbers are:7 -4 +8 -3 +9 -2. As you can see, no3 = no1 +1, no5 = no3 +1, etc etc. So the next number should be +10, giving 17+10 = 27. I hope this was
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Hello Brandi. You have used the word combinations, which in combinatorics means selections not counting as different which actual place holders they sit in. Thus the combination
http://en.allexperts.com/q/Number-Theory-2079/Math...
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