How many such symbols are there in the given series which are immediately followed by a number? 6 G # L 7 F % 5 B # 4 C 1 L S 6 M 7 B 3 S M @ 6 K 5 @

How many such letters are there in the given series which are immediately preceded by a number? 4 B @ D 4 G 6 # F % G & * N 6 A 3 S G @ 5 F 3 @ H 3

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