Select the number from among the given options that can replace the question mark (?) in the following series.

15, 22, 31, 42, 55, ?

-> The DDA JE Recruitment 2025 Notification will be released soon.

-> A total of 1383 vacancies are expected to be announced through DDA recruitment.

-> Candidates who want a final selection should refer to the DDA JE Previous Year Papers to analyze the pattern of the exam and improve their preparation.

-> The candidates must take the DDA JE Electrical/Mechanical mock tests or DDA JE Civil Mock tests as per their subject.