DMER MPSC अधिपरिचारिका PRELIMS
NURSING COMPETITIVE EXAMS

Reasoning & Aptitude

Learn the pattern first, study a fully solved example, then attempt practice questions with explanations. Suitable for NORCET, RRB, ESIC, DMER/DHS, CHO and state nursing recruitment exams.

17 reasoning topics 17 aptitude topics 0 checked answers this session
ReasoningTopic 1 of 34

Number series

Pattern & method

Check differences first, then second differences, multiplication/division, squares or alternating rules.

WORKED EXAMPLEAnswer explained

Find the next number: 3, 7, 13, 21, 31, ?

Correct answer: C. 43

The differences are +4, +6, +8, +10. The next difference is +12, so 31 + 12 = 43.

These are original learning and practice examples written for revision. They are not presented as verbatim questions from a specific official exam paper. Always follow the current notification for each exam's exact pattern and marking scheme.