You decrease by 4 every time.
87,83,79,75,71,67,63.
Answer:63.
If you wish to go farther:
87,83,79,75,71,67,63,59,55,51,47,43,39.
Halfway between them is 69.
43 47 53 59 61 67.
find varience fo rthis numbers 71, 67, 70, 59, 71, 68, 67, 71, 80, 68, 74, 69, 72, 68.
67.6363
The sequence is formed by subtracting 89 at the first step and then reducing this figure by 9 at each successive step. 298 - 89 = 209 209 - 80 = 129 129 - 71 = 58 58 - 62 = -4 -4 - 53 = -57........this is the next number in the series.
71
71
next would be 71 and then after it would be 63.
It is: 71
71.
61 67 71
71
The next 10 prime numbers after 29 are: 31 37 41 43 47 53 59 61 67 71.
Halfway between them is 69.
2OO
67 or 71
67 71 73