could be 72
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.
5/6 of 24 is 20.
31.............[15+1=16, 16+3=19, 19+5 =24, 24+7=31]
Each number is multiplied by negative 2 to get the next number. 5 x -2 = -10 -10 x -2 = 20 20 x -2 = -40 -40x -2 = 80 So the next logical number in the series 5 10 20 -40 would be 80.