What number should replace question mark (?) in the series given below:
51, 153, 76.5, 229.5, 114.75, 344.25, ?
1
172.125
2
1032.75
3
516.375
4
258.1875
What number should replace question mark (?) in the series given below:
51, 153, 76.5, 229.5, 114.75, 344.25, ?