6, 9, 18, 45, 126, ….?

A) 369

B) 359

C) 329

D) 317

Multiply given number by 3,  After multiply subtract 9 from same number:

6*3=18-9=9

 9*3=27-9=18

18*3=54-9=45

45*3=135-9=126

126*3=378-9=369

 

 

 

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