53
25-1=24 24-2=22 22-3=19 19-4=15 15-5=10 The next number in the series is 10.
26
10
What would be the next number in this series 15 12 13 10 11 8?
31.............[15+1=16, 16+3=19, 19+5 =24, 24+7=31]
59 is the next number in this series.
The next number in the series is 67.
24
24
67
75
67