Q: What is the next number in this sequence 1 3 9 27 81?

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9 243 - 81 = 162 81 - 27 = 54 162 = 54 * 3 54 = 18 * 3 27 - 18 = 9

81

729 is the next number in the sequence. You times each number by the past number times by three e.g. 3x3=9, 9x3=27, 27x3= 243, 243x3=729

The next number is 48.

121

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81 Each number is 3 x the previous number. So, 3 x 27 = 81.

9 243 - 81 = 162 81 - 27 = 54 162 = 54 * 3 54 = 18 * 3 27 - 18 = 9

81

81

729 is the next number in the sequence. You times each number by the past number times by three e.g. 3x3=9, 9x3=27, 27x3= 243, 243x3=729

The next number is 48.

121.

121

243

-63 and -81

It is 3 followed by 1

Next number= 27 X 3 = 81.