27.
the patterns are every other number
take 2,5,10,17
from 2-5 is 3, from 5-10 is 5, from 10-17 is 7
then 9,13,19 and ?
from 9-13 is 4, from 13-19 is 6, so the next difference would be 8. 19+8 is 27.
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3 + 4 +10 = 17 is a number sentence that has a sum of 17. 4 + 13 = 17 is also a number sentence that has a sum of 17. Here are some more number sentences: 10 + 10 - 3 = 17 21 - 4 = 17 There are many ways to write a number sentence that has a sum of 17. What other ways can you think of?
What number goes in the box to make the number sentence true?
100% - 10% = 90% so you multiply the number by 0.9
23
It's not possible to 'complete' it, as it has potentially an infinite number of terms. The next five terms after those shown are: 10, 4, -3, -11, -20 . After those, there are only an infinite number more.