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1. What will come at the place of question mark ?
2, 3, 6, 15, ?, 123

Solution:

First term → 2

Second term → (2 *3 -3) = 3

Third term → (3 *3 -3) = 6

Fourth term → (6 *3 - 3) = 15

Fifth term → (15 *3 - 3) = 42

Sixth term → (42 *3 - 3) = 123 

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