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
Get AI Help
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
