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

If the numbers from $1$ to $45$ which are exactly divisible by $3$ are arranged in ascending order,with the minimum number at the top,which number would be at the ninth place from the top?

If the digits of the number $26839514$ are arranged in descending order,the position of how many digits will remain unchanged?

Following questions are based on the five three-digit numbers given.
$513, 248, 371, 634, 167$
Which of the following is the last digit of the middle number when they are arranged in ascending order?

Find out the wrong term from the given series: $8, 13, 21, 32, 47, 63, 83$.

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?