NIELIT 2023 Feb Scientist D | Section A | Question: 15

Question

In the following Question, replace the ? with suitable options: $7,12,22,42,82$,?

• A. $143$
• B. $173$
• C. $183$
• D. $162$

   

Answer 1

For this series, in order to get the next number : Previous Number * 2 – 2. This is the pattern it follows.

 

Given Series : 7, 12, 22, 42, 82, ?

 

12 = 7 * 2 – 2

22 = 12 * 2 – 2

42 = 22 * 2 – 2

82 = 42 * 2 – 2

 

Similarly,

? = 82 * 2 – 2 = 164 – 2 = 162.

 

Option D is the correct answer.