Choose the correct alternative for the missing term:
$AZ, CX, FU, ?$

Study the following arrangement carefully and answer the question.
$O, 4, E, J, 5, T, 1, A, M, Q, 3, 8, N, I, K, 7, W, F, 6, S, 9, U, 2, Y, X$
Four of the following five are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to this group?

In the series $7, 14, 28, \ldots$,what will be the $10^{th}$ term?

Study the following arrangement carefully and answer the question.
$O, 4, E, J, 5, T, 1, A, M, Q, 3, 8, N, I, K, 7, W, F, 6, S, 9, U, 2, Y, X$
How many such numbers are there in the above arrangement,each of which is immediately preceded by a consonant and also immediately followed by a consonant?

One term in the number series is wrong. Find it out.
$1, 2, 5, 11, 10, 17, 28$

Find the missing letters for the given series from the given alternatives.
$a....cdaab....cc....daa....bbb......ccddd$