निम्नलिखित श्रृंखला को तार्किक रूप से पूर्ण करने के लिए दिए गए विकल्पों में से कौन सा विकल्प प्रश्न चिह्न (?) को प्रतिस्थापित कर सकता है? HS11, FU15, DW19, ?

How many odd numbers are there in the given string of elements which are immediately preceded by a letter and also immediately followed by a letter? (Count from left to right only) (Left) B 4 3 D G 7 6 F W 3 2 C B 5 N 4 8 K 9 W 7 M B 6 4 G A Z 3 9 7 K L 5 T 4 B 7 3 C 2 H K 5 P 6 5 F D V 3 A (Right)

Refer to the following number and symbol series and answer the question that follows. (Left) @ $ 7 2 4 & 9 3 & 7 1 @ 5 4 3 ^ * 6 @ 7 9 # 8 2 4 (Right) If all the symbols are dropped, which is the 7th term from the right end of the series?