Find the wrong number in the series :
$3, 8, 15, 24, 34, 48, 63$

Fill in the blank space for the given series with the correct alternative.
$2, 15, 41, 80, (\ldots)$

To answer these questions,study carefully the following arrangement of letters,digits,and symbols:
$6, =, *, C, E, 3, 8, G, L, M, 7, \star, @, P, R, 4, !, N, T, 5, S, V$
How many such letters are there in the arrangement,each of which is immediately followed by a symbol?

What will come in place of the question mark $(?)$ in the alphabetical sequence given below?
$A, C, A, B, B, D, B, C, C, E, C, ?$

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

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

If all the symbols are removed from the above arrangement, which element will be third to the left of thirteenth from the left?

Find the missing letters for the given series from the given alternatives:
$aab....bbaaa....cbba.....abc.....ba$