Question

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Answer 1

Step-by-step explanation:

18,3,21

hope it helps you

Answer 2

Answer:

It is in the alphabetical order as numbers spelled

Eight, eighteen, eleven, fifteen, five, four, fourteen, nine, nineteen , one, seventeen, six, sixteen, and so on

And you can see numbers are between 1 to 19

The order is meaningless as numbers but

when you treat them as words it gets meaningful as words pattern becomes clear

To complete the list think of 2, 3, 10, 12, 13 as two, three, ten, twelve and thirteen which would be written

alphabetically as ten, thirteen, three, twelve, two.

So the remaining numbers should be written in that order; 10,13,3,12,2.

Step-by-step explanation:

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