Find out the wrong term from the given series: $8, 13, 21, 32, 47, 63, 83$.

Fill in the blank space for the given series with the correct alternative.
$3, 9, 27, 81, (\ldots)$

Study the following arrangement carefully and answer the questions given below:
$R, 4, E, J, 5, T, 1, A, M, Q, 3, 8, N, I, K, 7, W, F, 6, D, 9, U, 2, Y, V$
If all the numbers in the above arrangement are dropped,which of the following will be the ninth to the left of $D$?

In the arrangement $P, 2, 6, M, 9, K, S, 4, V, 7$,the positions of the $1^{st}$ and the $6^{th}$ elements are interchanged,those of the $2^{nd}$ and the $7^{th}$ are interchanged,and so on. Then,which of the following will be the $4^{th}$ element from the left end in the new arrangement?

Fill in the blank space for the given series with the correct alternative.
$95, 115.5, 138, (...), 189$ (in $.5$)

Fill in the blank space for the given series with the correct alternative.
$90, 180, 12, 50, 100, 200, (\ldots), 3, 50, 4, 25, 2, 6, 30, 3$