निम्नलिखित संख्या श्रृंखला को देखिए और उसके बाद आने वाले प्रश्न का उत्तर दीजिए। गिनती केवल बाईं से दाईं ओर की जानी है। (सभी संख्याएँ केवल एकल अंक की संख्याएँ हैं।) (Left) 1 8 3 4 8 8 1 8 1 2 1 7 4 9 8 5 4 9 8 7 6 7 5 8 3 3 2 (Right) ऐसी कितनी सम संख्याएँ हैं जिनमें से प्रत्येक के ठीक पहले एक विषम संख्या और ठीक बाद में एक सम संख्या 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.)