Fill in the blank space for the given series with the correct alternative.
$11, 13, 17, 19, 23, 25, (\ldots)$

Find out the wrong term from the given series.
$445, 221, 109, 46, 25, 11, 4$

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

Find out the wrong term from the given series.
$1, 2, 6, 15, 31, 56, 91$

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

Study the following arrangement carefully and answer the question.
$O, 4, E, J, 5, T, 1, A, M, Q, 3, 8, N, I, K, 7, W, F, 6, S, 9, U, 2, Y, X$
If all the numbers in the above arrangement are dropped,which of the following will be the ninth to the left of $S$?