**Answer the question and with the shortest most simple way explain why thats the answer.**

**The missing number in the series 9, ____, 6561, 43046721 is:**

**Answers possible: 81, 25, 62, 31, 18**

**The missing number in the series 1, 4, 27,____, 3125 is:**

**Answers possible: 81, 35, 729, 256, 11**

**Answer:**

**9, ____, 6561, 43046721**

**The missing number in this sequence is 81.**

This is because nine multiplied by nine equals 81. 81 multiplied by 81 equals 6561, and 6561 multiplied by 6561 equals 43046721.

**1, 4, 27,____, 3125**

**The missing number is 256.**

This is because the the series is made by