One term in the number series is wrong or missing. Find it.
$1, 5, 11, 19, 29, 55$

Fill in the blank space for the given series with the correct alternative.
$4, 5, 9, 18, 34, (\dots)$

Fill in the blank space for the given series with the correct alternative.
$2, 3, 8, 63, (\ldots)$

Which term comes next in the series $YEB, WFD, UHG, SKI?$?

Choose the correct alternative for the missing term:
$BEH, KNQ, TWZ, ?$

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

$6, N,P ,=,@, 7,1 ,\& , R, T, 3, L, ,B, \star, E ,4,\# , 8, G,H ,\$, 5, K,M ,?, 2, D,C$

Four of the following five are alike in a certain way based on the positions of the elements in the arrangement and hence form a group. Which one does not belong to the group?