Which of the following numbers will replace the question mark (?) in the given series?
131, 133, 181, ?, 239

Correct option is A

Given: 131, 133, 181, ?, 239
To find the number that replaces the question mark in the series based on the given logic, we will use the described pattern:
Square of 11 + 10: $$11^2$$​+10=121+10=131
Square of 12 - 11: $$12^2$$​ −11=144−11=133
Square of 13 + 12: $$13^2$$​ +12=169+12=181
Square of 14 - 13: $$14^2$$​ −13=196−13= 183
Square of 15 + 14: $$15^2$$​ +14=225+14=239
So the sequence is: 131, 133, 181, 183, 239
Thus, the number that replaces the question mark is (a) 183.