तत्वों की दी गई श्रृंखला में ऐसी कितनी विषम संख्याएँ हैं जिनके ठीक पहले एक 'विषम संख्या' और ठीक बाद में एक 'सम संख्या' है? 4 5 9 7 4 3 6 2 1 7 6 5 9 8 4 3 5 2 7 8 3 4 6 9 2 4 9 6 2 3 5 4 7 8

Refer to the following letter, number, and symbol series and answer the question that follows. (NOTE: All numbers are single-digit numbers only.) (Left) H 2 @ Q I 3 L © £ R S 4 4 U © 9 1 W Y % 6 £ (Right) If all the symbols are dropped from the series, which element will be fifth from the left?

Which letter-number cluster will replace the question mark (?) in the given series to make it logically complete? AZA 27, XWX 36, UTU 45, RQR 54, ?