What will come in place of the question mark $(?)$ in the following alphabet series?
$XDH, \quad VGJ, \quad TJL, \quad RMN, \quad ?$

Choose the term which will continue the following series :
$P 3 C , R 5 F , T 8 I , V 12 L , ?$

To answer these questions, study the following arrangement of digits, letters and symbols carefully.

$6, N,P ,=,@, 7,1 ,\& , R, T, 3, L, ,B, \star, E ,4,\# , 8, G,H ,\$, 5, K,M ,?, 2, D,C$

If all the symbols in the arrangement are deleted, which of the following will be the $4^{th}$ to the left of the $12^{th}$ element from the left end?

Find out the missing term for the given series from the given alternatives:
$HS, JQ, LO, NM, (?)$

Choose the correct alternative to fill in the blanks in the series: $ba....b...aabb....a........a...bb$

Study carefully the following arrangement of letters,digits,and symbols to answer the question:
$M, 7, \&, 8, L, P, @, Q, N, \beta, T, Y, 3, 2, =, E, 4, 9, \#, G, H, 5$
How many such letters are there in the arrangement,each of which is immediately followed by a number?