Find out the wrong term from the given series.
$11, 5, 20, 12, 40, 26, 74, 54$

Find the missing letters for the given series from the given alternatives:
$.....abb......\,,....bb....a.....bbab.....ba$

These questions are based on the following set of numbers.
$738, 495, 329, 653, 849$
If $1$ is subtracted from the last digit of each number and then the numbers are arranged in descending order,which number will be the first?

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?

Choose the correct alternative for the missing term:
$OTE, PUF, QVG, RWH, ?$

Choose the correct alternative for the missing terms in the series: $R, M, ?, F, D, ?$