| In the following series, detect the wrong number. |
| 25, 36, 49, 81, 121, 169, 225 |
A) 225
B) 169
C) 49
D) 36
Correct Answer: D
Solution :
\[\begin{array}{*{35}{r}} 25 & 36 & 49 & 81 & 121 & 169 & 225 \\ \downarrow & \downarrow & \downarrow & \downarrow & \downarrow & \downarrow & \downarrow \\ {{(5)}^{2}} & {{(6)}^{2}} & {{(7)}^{2}} & {{(9)}^{2}} & {{(11)}^{2}} & {{(13)}^{2}} & {{(15)}^{2}} \\ \end{array}\] Except 36, each number is a square of off number.
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