Multiple choice general knowledge science & technology 0,0,1,2,4,7,,.complete the series. 13,21 12,20 11,19 10,18 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The differences between consecutive terms are 0, 1, 1, 2, 3. Each difference from the third term onward is the sum of the two preceding differences (Fibonacci pattern). So the next differences are 5 (2+3) and 8 (3+5), giving 7+5=12 and 12+8=20.