Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
1, 9, 25, 49, ?
Option 1: 83
Option 2: 91
Option 3: 81
Option 4: 73
Correct Answer: 81
Solution :
Given:
1, 9, 25, 49, ?
The given numbers are the square of the odd numbers –
1→(1)
2
; 9→(3)
2
; 25→(5)
2
; 49→(7)
2
The next odd number is 9 and its square is 81.
So, 81 is the missing number in the given series. Hence, the third option is correct.
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Get Updates Brochure
Your Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.
