Question

In the following question, a number series is given. A number in the series is suppressed by 'P' mark. First, find out the number in the place of 'P' mark and use this number to find out the answer to the question following the series.

188 186 P 174 158 126

Find $\sqrt{P-13}$

• A. 14.3
• B. 14.1
• C. 13
• D. 13.67

Answer 1

Answer: (C)

13

Difference between $126$ & $158$ is $32$

Difference between $158$ & $174$ is $16$

As difference is becoming half

$\Rightarrow P=174+\left(\frac{16}{2}\right)=182$

$\therefore \sqrt{P-13}=\sqrt{182-13}=\sqrt{169}=13$