Refer to the following letter, number, and symbol series and answer the question. (Left) S = N 4 & % L A * 6 T & C @ 4 B % 2 X L (Right) How many such numbers are there in the series which are immediately preceded by a letter and also immediately followed by a symbol?

Refer to the following number and symbol series and answer the question. Counting is to be done from left to right only (all numbers are single-digit numbers only). (Left) / 8 & + ^ 1 + < # @ ^ \ 2 # $ 8 9 * 7 2 $ (Right) How many such numbers are there each of which is immediately preceded by a symbol and also immediately followed by a symbol?

Refer to the given letter, symbol series and answer the question that follows. Counting to be done from left to right only. # Q £ E € * & % W © F & R G * C $ H O € I * How many such letters are there, each of which is immediately preceded by a letter and also immediately followed by a symbol?