Choose the correct alternative to complete the series: $a . b e . . c . . a b b . . . b c a . . . .$

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

$6,=, \#, C,E, 3,8 ,G,L,M, 7, \star, @ ,P,R, 4, \$,N,T, 5, S,V$

If all the digits in the arrangement are removed, then which of the following will be the $8^{th}$ to the right of the $15^{th}$ element from the right end?

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

Find out the wrong term from the given series:
$3, 2, 8, 9, 13, 22, 18, 32, 23, 42$

Fill in the blank space for the given series with the correct alternative.
$66, 36, 18, (\ldots)$

Find the missing term for the given series from the given alternatives:
$BXJ, ETL, HPN, KLP, ?$