Extend the following sequence by giving the next two terms:
1, 3, 6, 10, 15, ...
Enter your answers here:
and
21
28
Right!
The student got this item correct.
16
17
Sorry, that's not right. For problems like these, you need to find the
pattern between each of the numbers. The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 21 and 28.
The student seemed to have added 1
to get the next two numbers.
17
19
Sorry, that's not right. For problems like these, you need to find the
pattern between each of the numbers. The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 21 and 28.
The student seemed to have added 2 (the difference between 1 and 3)
to get the next two numbers.
19
23
Sorry, that's not right. For problems like these, you need to find the
pattern between each of the numbers. The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 21 and 28.
The student seemed to have added 4 (the difference between 10 and 15)
to get the next two numbers.
Sorry, that's not right. For problems like these, you need to find the
pattern between each of the numbers. The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 21 and 28.
The student got this item incorrect.
ExtendOtherRecursive