Question

In the following number series, one term does not fit into the series. Find the wrong term.

4, 18, 38, 100, 180, 294, 448

• A. $18$
• B. $38$
• C. $100$
• D. $180$

Answer 1

The correct option is B $38$

By changing $38$ to $48$, we have differences as $14,30,52,80,114,154$. These differences differ by $16,22,28,34,40$ which show a constant difference of $6$.