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 $D$?

Study the following arrangement carefully and answer the question given below:
$B, 2, I, J, K, 4, 3, H, 5, E, R, P, 6, N, A, 9, W, 8, T, U, 1, V, D, 7, F$
Four of the following five are alike in a certain way and so form a group based on their positions in the given arrangement. Which is the one that does not belong to this group?

Choose the correct alternative to fill in the blanks in the series: $....\,,\;....aba....\,,\;....ba.....ab$

Find out the missing term for the given series from the given alternatives:
$HS, JQ, LO, NM, (?)$

These questions are based on the following set of numbers.
$389, 476, 635, 847, 568$
If in all the numbers the first two digits are interchanged and then the numbers are arranged in ascending order,which number will be the second?

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