Fill in the blank space for the given series with the correct alternative.
$134, 245, 356, 467, (...)$

Choose the correct alternative for the missing term in the sequence:
$Z, S, W, O, T, K, Q, G, ?$

These questions are based on the following arrangement. Study it carefully and answer the questions.

$8 ,H ,\% ,3,7 ,T,A ,4 ,\# ,6 ,B,I ,@ ,R ,1 ,Q ,\star, L,E ,2 ,K ,\$ ,U ,5,9$

How many such symbols are in the above arrangement each of which is immediately followed by a number but not immediately preceded by another number?

Which of the following will come in place of the question mark $(?)$ in the order given below?
$AB, AB, CB, CB, CD, CD, ?$

Fill in the blank space for the given series with the correct alternative.
$3, 7, 15, 31, 63, (\dots)$

Choose the correct alternative to complete the series: $...bca...cca...ca....b...c$