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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


Team Careers360 12th Jan, 2024
Answer (1)
Team Careers360 20th Jan, 2024

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.

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