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A case could be made for any of them, but let's go with 48.

The pattern is doubled, plus three, doubled, plus three, etc.

Q: What does not belong 1 - 2 - 5 - 10 - 13 - 26 - 29 - 48?

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The numbers that belong to the series are the following: 1, 2, 5, 10, 13, 26, 29 and 48.

48

Thirteen

48 shoud be 58.

29

Related questions

The numbers that belong to the series are the following: 1, 2, 5, 10, 13, 26, 29 and 48.

1

48

48

1

Thirteen

48. This is because 1*2=2, 2+3=5, 5*2=10, 10+3=13, 13*2=26, 26+3=29, but 29*2≠48.

48, it should be 58: 1- double it=2. 5- double it=10. 13- double it=26. 29- double it=58.

48 doesn't belong! 1-2 (+3) 5-10 (+3) 13-26 (+3) 29-48 In each set the 1st number is half of the 2nd exept for the last set.

48 shoud be 58.

I'd say it's 48. To fit the pattern, it should be 58. If you take 1 and 2 and add them the answer is 3, you will use that answer several more times you will also add some numbers to them selves such as follows. 1+2=3 3+2=5 5+5=10 10+3=13 13+13=26 26+3=29 29+29=58 Thus making 48 the one that does not belong.

Most probably 48.