RRB NTPC CBT-1 previous year question
What should come in place of the ‘?’ in the given series? 5 9 20 40 67 103 ?
Asked in RRB NTPC 2026 — 18 June Shift 3 · Reasoning
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Correct answer: (A) 146
The first differences between terms are 4,11,20,27,36 and the second differences alternate 7,9,7,9. The next first-difference is 36+7=43, giving the next term 103+43=146.
हिंदी में प्रश्न
दी गई श्रृंखला में +? के स्थान पर क्या आएगा? 5 9 20 40 67 103 ?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 146
पदों के बीच पहला अंतर 4,11,20,27,36 है और दूसरा अंतर 7,9,7,9 के क्रम में बदलता है। अगला पहला अंतर 36+7=43 है, जिससे अगला पद 103+43=146 मिलता है।
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