Question 141
What should come in place of the question mark (?) in the following number series?
1 4 14 45 139 422 ?
Solution
The pattern here followed is :
1 * 3 + 1 = 4
4 * 3 + 2 = 14
14 * 3 + 3 = 45
45 * 3 + 4 = 139
139 * 3 + 5 = 422
422 * 3 + 6 = 1272
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