Find the missing letters for the given series from the given alternatives.
$.....bcdbc....dcabd....bcdbc....dc....bd$

Find the missing term for the given series from the given alternatives.
$G, H, J, M, (?), V$

Fill in the blank space for the given series with the correct alternative.
$8, 24, 12, 36, 18, 54, (\ldots)$

Find out the missing letters for the given series from the given alternatives.
$adb.....ac.....da....cddcb.....dbc....cbda$

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

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

What will come in place of the question marks $(?)$ in the following series based on the above arrangement?

$E,D,H ,9 ,\star, 7, I,\$,F, ?, ?, ?$

Choose the correct alternative to fill in the blanks in the series: $...,...aba..., ...ba ...ab$