What should come in place of? in the given series?
131, 141, 161, 191, 231, ? ​​

Given:
131, 141, 161, 191, 231, ? ​​
Logic: the differences between consecutive numbers are increasing by 10 each time.​

141 - 131 = 10

161 - 141 = 20

191 - 161 = 30

231 - 191 = 40

Similarly;
? - 231 = 50 

? = 231+ 50

Thus, the correct option is (c).