Q: What are the missing numbers in the pattern below 12 21 30 39?

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55

The answer depends on where, within the sequence, the missing number should have been.

The pattern between the numbers is: 11, 12 and 13

12 24 36 48, that would be 12

6 x2 12 x4 48 x2 96 x4 384

Related questions

They're the first prime numbers minus 1 -- except that 10 is missing.

The Answer is 26

55

The answer depends on where, within the sequence, the missing number should have been.

23

12 ****************************** 11, 16, 22 are the 3 numbers continuing the pattern.

The next numbers in the sequences are 48, 96, 192, 384, etc. The pattern is that each subsequent number is a doubling of the previous number.

number of composite numbers below 20: 10composite numbers below 20: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18

11

The pattern between the numbers is: 11, 12 and 13

You use a different value!

6 x2 12 x4 48 x2 96 x4 384