Find the wrong number in the series 26 27 34 58 106 186 306
Answers
Answer:
The wrong number is 27.
Step-by-step explanation:
If we replace 27 by 26 then 26 is obtained by : previous number + 1² - 1
= 26 + 1 - 1 = 26
34 is obtained by : previous number + 3² - 1
= 26 + 9 - 1 = 34
58 is obtained by : previous number + 5² - 1
= 34 + 25 - 1 = 58
106 is obtained by : previous number + 7² - 1
= 58 + 49 - 1 = 106
186 is obtained by : previous number + 9² - 1
= 106 + 81 - 1 = 186
306 is obtained by : previous number + 11² - 1
= 186 + 121 - 1 = 306
So, in order to form a patter we need to replace the second term 27 by 26
Hence, the wrong number in the series is 27