Four of the following are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to that group?

How many such vowels are there in the above arrangement each of which is either immediately preceded by a symbol or immediately followed by a symbol or both?

If all the numbers in the above arrangement are dropped, which of the following will be the eleventh from the right end ?

How many such consonants are there in the above arrangement each of which is immediately preceded by a consonant and also immediately followed by a number ?

How many such symbols are there in the above arrangement each of which is immediately preceded by a letter and also immediately followed by a number ?

How many such numbers are there in the above arrangement each of which is immediately preceded by a consonant and also immediately followed by a symbol ?