RRB Technician Grade 3 previous year question
Refer to the following series and answer the question. (All numbers are single-digit numbers only. Counting to be done from left to right.) (Left) 7 9 2 6 1 2 6 4 8 2 7 5 9 8 6 5 4 2 2 1 3 (Right). How many such even digits are there, each of the which is immediately preceded by a perfect square and immediately followed by an even digit? (NOTE: 1 is also a perfect square)
Asked in RRB Technician Grade 3 (10 Mar 2026 Shift 1) · Reasoning
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Correct answer: (A) Three
Scanning the series left to right, an even digit that is immediately preceded by a perfect square digit (1,4,9) and immediately followed by another even digit occurs at exactly three positions in the sequence.
हिंदी में प्रश्न
निम्नलिखित अंक श्रृंखला का संदर्भ लें और नीचे दिए गए प्रश्न का उत्तर दें। (सभी संख्याएं केवल एकक-अंकीय संख्याएं हैं। गिनती बाएं से दाएं की जानी है।) (बाएं) 7 9 2 6 1 2 6 4 8 2 7 5 9 8 6 5 4 2 2 1 3 (दाएं)। ऐसे कितने सम अंक हैं, जिनमें से प्रत्येक के ठीक पहले एक पूर्ण वर्ग और ठीक बाद में एक सम अंक है? (नोट: 1 भी पूर्ण वर्ग है)
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उत्तर और व्याख्या देखें
सही उत्तर: (A) तीन
श्रृंखला को बाएं से दाएं देखने पर, ऐसा सम अंक जिसके ठीक पहले पूर्ण वर्ग अंक (1,4,9) हो और ठीक बाद एक और सम अंक हो, ऐसे स्थान श्रृंखला में ठीक तीन बार आते हैं।
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