SOLUTION: What should come in place of question mark in the following series- 1,3,9,21,81,?,729 Ans- 1. 243 2. 324 3. 686 4. 162

Algebra ->  Sequences-and-series -> SOLUTION: What should come in place of question mark in the following series- 1,3,9,21,81,?,729 Ans- 1. 243 2. 324 3. 686 4. 162      Log On


   

Question 877985: What should come in place of question mark in the following series-
1,3,9,21,81,?,729
Ans-
1. 243
2. 324
3. 686
4. 162
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Each successive term is multiplied by 3.
81%2A3=243