What will be the next number of the following sequence Sequecne 1, 9, 54, 270,.......

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15 Jun 2010 Next Number

What will be the next number of the following sequence
Sequecne 1, 9, 54, 270,.......

OPtion

1) 1190
2) 1220
3) 1215
4) 1210
5) 1150
6) 1165
7) 1250
8) 1275
9) 1350
10) 1400

Solution

1 = 1*3^0

9 = (1 + 2)*3^1

54 = (1 + 2 + 3)*3^2

270 = (1 + 2 + 3 + 4)*3^3
Similarly

Next number = (1 + 2 + 3 + 4 + 5)*3^4

Correct Option: 3 Best Solution (0)