दी गई श्रृंखला को देखें और उसके बाद आने वाले प्रश्न का उत्तर दें (सभी संख्याएँ केवल एकल-अंक की संख्याएँ हैं, और गिनती बाएं से दाएं की जानी है): (बाएं) 7 2 5 5 2 1 9 2 4 1 2 2 6 9 5 5 5 3 8 5 5 3 1 1 6 3 3 (दाएं) ऐसे कितने सम अंक (even digits) हैं, जिनमें से प्रत्येक के ठीक पहले एक पूर्ण वर्ग (perfect square) हो और ठीक बाद में एक सम अंक हो? (नोट: 1 को एक पूर्ण वर्ग माना जाएगा।)

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

Refer to the given series and answer the question that follows. Counting is to be done from left to right only. All numbers are single-digit numbers. (Left) 3 8 3 5 1 5 6 2 6 7 6 6 2 6 6 7 1 7 9 6 1 9 9 (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?