Question 11
What is the next number in the series?
16, 21, 12, 18, 10, 17, 8, ___
Pattern convention (editorial): group consecutive terms into pairs and continue the second-minus-first differences by increasing them by 1.
16, 21, 12, 18, 10, 17, 8, ___
Pattern convention (editorial): group consecutive terms into pairs and continue the second-minus-first differences by increasing them by 1.