What terms will fill the blank spaces?
$Z, X, V, T, R, (...), (...)$

Choose the correct alternative to complete the series: $aa . . ab . . . . . . aaa . . . a$.

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

What will be the next term in the series: $BDF, CFI, DHL, ?$

These questions are based on the following arrangement. Study it carefully and answer the questions.
$8, H, \%, 3, 7, T, A, 4, \#, 6, B, I, @, R, 1, Q, \star, L, E, 2, K, \,U,5,9$
Four of the following five are alike in a certain way on the basis of their positions in the above arrangement and so form a group. Which is the one that does not belong to the group?

Study of the following arrangement carefully and answer the questions given below.

$Q,E ,* ,P,M ,8 ,R,A ,@ ,C ,9 ,U,H,W, \# ,J,Z, ,S, \beta, Y,N ,5 ,\$ ,G,I,T$

Which of the following is eighth to the right of the thirteenth element from the left end of the arrangement?