निम्नलिखित संख्या श्रृंखला को देखिए और उसके बाद आने वाले प्रश्न का उत्तर दीजिए (सभी संख्याएं केवल एकल-अंक की संख्याएं हैं)। गिनती केवल बाएं से दाएं की जानी है। (Left) 8 2 3 1 5 6 7 8 9 4 5 3 4 2 3 5 6 7 1 2 3 4 8 9 (Right) ऐसे कितने सम अंक हैं, जिनमें से प्रत्येक के ठीक पहले एक पूर्ण वर्ग है और ठीक बाद में एक विषम अंक है? (नोट: 1 भी एक पूर्ण वर्ग है।)

Refer to the given series and answer the question that follows. (All numbers are single digit numbers only.) Counting to be done from left to right. (Left) 7 4 3 6 9 3 6 4 5 7 4 5 2 3 8 4 1 5 2 3 7 1 2 5 7 9 8 (Right) How many such even digits are there, each of which is immediately preceded by an odd digit and also immediately followed by an even digit?

Refer to the following number series and answer the question that follows (all numbers are single-digit numbers only). Counting to be done from left to right only. (Left) 7 4 1 2 4 9 8 5 3 6 1 5 4 6 7 4 8 3 9 6 5 2 3 9 1 4 2 (Right) How many such even numbers are there, each of which is immediately preceded by a perfect square and immediately followed by an odd number? (NOTE: 1 is also a perfect square.)