Alpha-Numeric, ...

9 4 V ? 3 K Q @ 8 M U * 2 D J $ 7 Z B £ V D P I G X 5 A L O R

How many symbols in the sequence are either immediately followed by a letter belonging to the first half of the English alphabet or by a number?

9 4 V ? 3 K Q @ 8 M U * 2 D J $ 7 Z B £ V D P I G X 5 A L O R

What is the total number of the numbers immediately followed by a letter and the symbols immediately preceded by a letter, together in the given sequence?

P 1 % T R A 5 # D M 7 K * E G 2 8 $ H 3 1 4 V U 6 F Å 9 Z

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

P 1 % T R A 5 # D M 7 K * E G 2 8 $ H 3 1 4 V U 6 F Å 9 Z

How many such vowels are there in the above arrangement, each of which is immediately preceded by a digit and immediately followed by a consonant?

P 1 % T R A 5 # D M 7 K * E G 2 8 $ H 3 1 4 V U 6 F Å 9 Z

Which of the following is exactly in the middle of the fifth element from the left end and the seventh element from the right end?

P 1 % T R A 5 # D M 7 K * E G 2 8 $ H 3 1 4 V U 6 F Å 9 Z

If the position of the last twelve elements in the above arrangement are reversed, then which of the following will be the tenth element to the right of the eleventh from the left end?

2 P J @ 8 $ L B 1 V # Q 6 x G W 9 K C D 3 © · £ 5 F R 7 A Y 4

How many such symbols are there in the sequence which are either immediately preceded or immediately followed by the letter which is from the first half of the English alphabet?

2 P J @ 8 $ L B 1 V # Q 6 x G W 9 K C D 3 © · £ 5 F R 7 A Y 4

P @ L is to Y75 in the same way as $ 1 # is to_______.

R * T J L 2 $ D = M # 8 C % B < K 1 & A W? P E + Q @ 7 F 6 19.

Which of the following is sixth to the right of eighteenth element from the left end?

R * T J L 2 $ D = M # 8 C % B < K 1 & A W? P E + Q @ 7 F 6 19.

If the first fifteen elements in the above sequence are written in reverse order then which of the following will be twenty-first from the right end?