SSC CPO 13th Dec 2019 Shift-1 Question 7

Question 7

Select the number that can replace the question mark (?) in the following series.
3, 12, 36, 80, ?, 248

Solution

Given series 3, 12, 36, 80, ?, 248

take of difference  12-3 = 9,  36-12= 24, 80-36= 44 ,......

Again take difference of difference  24-9 = 15 , 44-24 = 20  next 25 and so on 

then 44 + 25 = 69 

therefore ? = 80+ 69 = 149 Ans 



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Comments
Sapna Sahu

1 year, 5 months ago

Select the number that can replace the question mark in the following 6,12,60,222,606

NEELESH Kumar SHARMA

1 year ago

Answer

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