8
78
24
No. The pattern is: +9, +1, -20, +9, +1, -20... So the next five numbers are: -5, 4, 5, -15, -6.
-5
65
25-1=24 24-2=22 22-3=19 19-4=15 15-5=10 The next number in the series is 10.
30
24 for each number you add 5 and then subtract 2. 19 plus 5 is 24.
The rule is: add 5, subtract 2, add 5, subtract 2, . . . Next number is 24.
(5 / 6) * 24 = 2020 = 24 x 5/6 = 24/6 x 5 = 4 x 5
5/6 of 24 is 20.