Choose the correct alternative for the missing term:
$AD, EH, IL, ?, QT$

Choose the correct alternative for the missing term:
$Q1F, S2E, U6D, W21C, ?$

Second and third digits of each number given below are interchanged. Then,the $1st$ and the last digits of each new number thus formed are interchanged. Which of the following numbers then will be the highest number among the five?
$273, 372, 438, 184, 526$

Find the missing term for the given series from the given alternatives:
$CMW, HRB, (?), RBL, WGQ, BLV$

Fill in the blank space for the given series with the correct alternative.
$1, 2, 3, 6, 9, 18, (\ldots), 54$

These questions are based on the following letter/number/symbol arrangement. Study it carefully and answer the questions that follow.

$5, D,H,E, \star, 7,9, \$ ,F,I ,6 ,R ,\% ,L ,1 ,A,J, 3, B, \# ,4 ,@ ,K,P ,8, U,M, 2$

Which element will be fifth to the right of ninth from the right end if all the numbers are removed from the above arrangement?