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Counting Odd Numbers by Twos

You can count by twos by either:

  • Adding 2 to the previous number or
  • Counting and skipping every other number.

The numbers that you would count if you started with 0 and counted by twos would be:
0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 and so on.
Notice that all of the counts are even numbers.

The numbers that you would count if you started with 1 and counted by twos would be:
1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31 and so on.
Notice that all of the counts are odd numbers.






What is the Next odd Number if Counting Up by Twos?

The next odd number after when counting by twos is   



You have correct and   incorrect.  This is percent correct.

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