Fill in the blank space for the given series with the correct alternative.
Which of the following will not be a number of the series $1, 8, 27, 64, 125, \ldots$?

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?

Find out the wrong term from the given series:
$56, 72, 90, 110, 132, 150$

If the digits in the number $5, 7, 3, 4, 6, 2, 9$ are arranged in ascending order from left to right,how many digits will remain at the same position?

Choose the correct alternative to complete the series:
$a \_ \_ b a \_ \_ \_ b \_ \_ \_ \_ b \_ \_ \_ \_ a \_ \_ \_ \_ b$

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 vowels are there in the above arrangement,each of which is immediately preceded by a number and immediately followed by a consonant?