1, 3, 7, 15, 31, . . .
Find the next two terms in the sequence shown above.
33, 35
41, 53
63, 127
83, 147
1
Sorry, that's not right. For problems like these, you need to find the
pattern based on the differences between all the pairs of numbers.
The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 63 and 127.
Student thinks there's a common difference of 2.
2
Sorry, that's not right. For problems like these, you need to find the
pattern based on the differences between all the pairs of numbers.
The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 63 and 127.
Student checked first two pairs and thinks there's an even
progression (2, 4, 6, ... instead of 2, 4, 8, ...).
3
Correct, good job!
The student got this item correct.
4
Sorry, that's not right. For problems like these, you need to find the
pattern based on the differences between all the pairs of numbers.
The pattern may not be a single
common difference, as with arithmetic sequences.
The correct numbers are 63 and 127.
Not sure what the problem is.
ExtendOtherRecursive