16, 26, 56, 36, 46, 68, 56, … choose which pair of numbers comes next?

80, 66
64, 82
66, 80
78, 68 E. 66, 82

The answer is C. 66, 80.

The sequence is a simple alternating addition and subtraction of 10. The first number is 16, and then 10 is added to get 26. Then 10 is subtracted to get 16, and then 10 is added to get 26. This pattern continues, with 10 being added and then subtracted every other number.

The next number in the sequence is 56, and then 10 is added to get 66. The next number is 66, and then 10 is subtracted to get 56. The next number is 56, and then 10 is added to get 66. This pattern continues, with 10 being added and then subtracted every other number.

Therefore, the next pair of numbers in the sequence is 66, 80.