Observe the following numbers: (1) - 3,9, - 27,81, - 243729. (2) 0,12, - 24,84, - 243729. (3) - 1,3, - 9,27, - 81243 Take the 10th number in each row and calculate the sum of the three numbers

Observe the following numbers: (1) - 3,9, - 27,81, - 243729. (2) 0,12, - 24,84, - 243729. (3) - 1,3, - 9,27, - 81243 Take the 10th number in each row and calculate the sum of the three numbers

There seems to be something wrong with the second sequence
(1) - 3,9, - 27,81, - 243729. The sequence is (- 1) ^ n * 3 ^ n 3 ^ 10
2) 0,12, - 24,84, - 243729
3)-1,3,-9,27,-81,243…… The sequence is (- 1) ^ (n) * 3 ^ (n-1) 3 ^ 9