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

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

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

What should come in place of the question mark $(?)$ in the following series based on the above arrangement?

$QP@,MAH,@YZ,?$

Fill in the blank space for the given series with the correct alternative.
$3, 6, 5, 20, 7, 42, 9, (...)$

Find the missing letters for the given series from the given alternatives:
$c....ac....aa....bc....bcc$

Find out the wrong term from the given series: $3, 10, 27, 4, 16, 64, 5, 25, 125$.

Study the following arrangement carefully and answer the question.
$O, 4, E, J, 5, T, 1, A, M, Q, 3, 8, N, I, K, 7, W, F, 6, S, 9, U, 2, Y, X$
Which of the following is the fourth to the right of the tenth from the right end of the above arrangement?