Alpha-Numeric, ...

R D A K 5 B I 2 M J E N 9 7 U Z V 1 W 3 H 4 F Y 8 P 6 Y G

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

Which of the following is the eighth to the left of the seventeenth element from the left end?

Three of the following four 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?

Which of the following is the sixth to the right of the nineteenth element from the right end7

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

J Y 2 = £  x E M ¤ 7 $ H P 9 K L β @ W Q 1 3 # C D ©

How many such symbols are there in the above arrangement each of which is either immediately followed by a number or immediately preceded by a letter, but not both?

J Y 2 = £  x E M ¤ 7 $ H P 9 K L β @ W Q 1 3 # C D ©

How many such letters are there in the above arrangement each of which is either immediately followed by a number or immediately preceded by a symbol, but not both?

J Y 2 = £  x E M ¤ 7 $ H P 9 K L β @ W Q 1 3 # C D ©

How many such numbers are there each of which is either immediately followed by a symbol or immediately preceded by a letter, but not both?

J Y 2 = £  x E M ¤ 7 $ H P 9 K L β @ W Q 1 3 # C D ©

Three of the following four are alike in a certain way based on the position of the elements in the above arrangement and hence form a group. Which one does not belong to the group?