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?

In the set of three-digit numbers given below,the first two digits of each number are interchanged. Which one among them will be in the middle if they are arranged in ascending order after the change?
$230, 422, 328, 516, 138$

Study the following arrangement carefully and answer the question given below:
$R, 4, E, J, 5, T, 1, A, M, Q, 3, 8, N, I, K, 7, W, F, 6, D, 9, U, 2, Y, V$
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?

The following question is based on the five three-digit numbers given below:
$519, 368, 437, 246, 175$
Which of the following is the third digit of the second highest number?

Find out the wrong term from the given series:
$16, 22, 30, 45, 52, 66$

Fill in the blank space for the given series with the correct alternative.
$4, 23, 60, 121, (\ldots)$