Question

What will come in place of the question mark (?) in the following series?

13      26       78       ?      468      936

A 188 Correct Answer Incorrect Answer
B 204 Correct Answer Incorrect Answer
C 156 Correct Answer Incorrect Answer
D 145 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

13 x 2 = 26 26 x 3 = 78 78 x 2 =  156 156 x 3 = 468 468 x 2 = 936

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