Question

Identify the term that will replace the ?

$2,-6,18,-54,162,?$

• A. $486$
• B. $-486$
• C. $422$
• D. $-428$
• E. $420$

Answer 1

The correct option is B $-486$

The series follow a sequence,

$2\times -3=-6$, $-6\times (-3)=18$, $18\times (-3)=-54$, $-54\times (-3)=162$ and $162\times (-3)=-486$.

Hence, complete series is

$2,-6,18,-54,162,-486$

Thus, $-486$ replaces question mark.