Find the number that can replace the question mark (?) in the following series.6, 29, 121, 489, ?, 7849

Find the number that can replace the question mark (?) in the followin

1.	Find the number that can replace the question mark (?) in the following series.6, 29, 121, 489, ?, 7849
A.	1961
B.	1891
C.	1916
D.	1981
Answer» B. 1891