Final answer:
The odd one out in the sequence is 16, as it is the only number that isn't a product of the number 3 and is also the only perfect square in the list.
Step-by-step explanation:
To find the odd one out in the given sequence 6, 9, 16, 21, 24, 26, 28, 30, we can look at various patterns such as even and odd numbers, prime numbers, or multiples of a certain number. By examining the series:
- 6 (2 x 3)
- 9 (3 x 3)
- 16 (4 x 4)
- 21 (3 x 7)
- 24 (3 x 8)
- 26 (2 x 13)
- 28 (4 x 7)
- 30 (3 x 10)
We can see that except for the number 16, all others are products of at least one number 3. Therefore, 16 is the odd one out, as it is the only perfect square and doesn't have the factor 3.
Note that 15 is not part of the provided sequence and should be ignored as the question requested.