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January 31, 2015

January 31, 2015

Posted by **Shadow** on Wednesday, September 29, 2010 at 8:51pm.

1.4,6,9,13,18

-I know that from 4 to 6 they added 2 and then from there each time the number you add is 1 more than the last one, but I don't know how to make a conjecture. Thanks

- Math -
**Ms. Sue**, Wednesday, September 29, 2010 at 9:05pm9 + 4 = 13

13 + 5 = 18

18 + 6 = ?

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