Complete the series... 1 15 53 _
127
115
105
none
Find the unknown? 2*3=10, 3*4=21, 8*7=96, 12*3=?
36
180
190
All
Find the next... 10 ,23 ,40 ,61 ,_
76
86
96
Guess??? N , TW , THR , FR , ???
FV
Av
ZX
SX
How's this? 1 2 6 48 2592 ?
null
1000
6842888
6842880
Try... 8 , 54 , 192 , …
400
500
450
490