2n x 3(n + 1)
2n x 3n
2n x 3n
2n x 3n−1
Correct answer is B
2 x 3, 4 x 6, 8 x 9, 16 x 12,...
21 x 3 x 1, 22 x 3 x 2, 23 x 3 x 3, 24 x 3 x 4,.... 2n x 3n
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