A) 6, 12
B) 9, 18
C) 18, 27
D) 9, 27
Correct Answer: D
Solution :
Form groups of 3 numbers viz. \[(1,\,1,1)=({{1}^{1}},\,{{1}^{2}},\,{{1}^{3}})\] (2, 4, 8) = (21, 22, 23) \[(2,\,4,\,8)\,=({{2}^{1}},\,{{2}^{2}},\,{{2}^{3}})\]
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