Question 31

Select the number that can replace the question mark (?) in the following series.
1, 11, 35, 79, ?, 251

Solution

 Given series 1, 11, 35, 79, ?, 251 

the given series follow the pattern

1 = $$ (1)^3 + (1)^2 -1$$

11= $$ (2)^3+ (2)^2 -1$$

35 = $$ (3)^3+ (3)^2 -1$$

79 =$$ (4)^3+ (4)^2 -1$$

next ? = $$ (5)^3+ (5)^2 -1$$

? = 125 +25 -1 

? = 150-1

? = 149 Ans 


Create a FREE account and get:

  • Free SSC Study Material - 18000 Questions
  • 230+ SSC previous papers with solutions PDF
  • 100+ SSC Online Tests for Free

cracku

Boost your Prep!

Download App