Extend the following sequence by giving the
next two terms:
2, 6, 18, 54, 162, ...
Enter your answers here:
and
486
1458
Right!
The student correctly extended the sequence by finding the next two terms.
166
170
Sorry, that's incorrect. It looks like you found the difference between the first two terms, and then used this difference to find the next two terms. This works for arithmetic sequences, but this is not an arithemetic sequence. It's a good idea to look at all the terms given in the question .
The student looked at the difference between the first two terms, instead of looking at all the terms given in the question.
486
Sorry, that's incorrect. Although you computed the next term correctly, It looks like you may have made a mistake computing the term after that. Check your calculations.
The student may have made a computation error.
386
Sorry, that's incorrect. It looks like you may have made a mistake computing the next term. Check your calculations.
The student may have made a multiplication error.
Sorry, that was incorrect.
The student got this item incorrect.
ExtendGeometric