Question : Directions: In the following question, select the missing number of the given series.
10, 9, 17, –10, 54, ?
Option 1: –71
Option 2: –82
Option 3: –67
Option 4: –103
Correct Answer: –71
Solution :
Given:
10, 9, 17, –10, 54, ?
The pattern is as follows –
10 – (1)
3
= 10 – 1 = 9
9 + (2)
3
= 9 + 8 = 17
17 – (3)
3
= 17 – 27 = –10
–10 + (4)
3
= –10 + 64 = 54
54 – (5)
3
= 54 –125 = –71
So, the missing number of the series is –71. Hence, the first option is correct.
Related Questions
Know More about
Staff Selection Commission Multi Tasking ...
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Get Updates Brochure
Your Staff Selection Commission Multi Tasking Staff Exam brochure has been successfully mailed to your registered email id “”.
