Let's break down the problem step-by-step:
Therefore, the sixth letter from the left end of the new word formed is J.
If the first half of the given letter series is reversed, then which of the following will be the third letter to the left of the eighth letter from the right?
A U R R G H R S W C G I O P D S Q T
If the second half of the given series is reversed, and then the first quarter of the new series is placed at the end, which of the following will be in the middle?
K18A4R2TE23N
Which figure should replace the question mark (?) if the following series were to be continued?

How many such pairs of digits are there in the number ‘95126139', which have as many digits between them in the number (both forward and backward direction) as they have between them in the Numeric Series?
If all the vowels are dropped from the given arrangement, which of the following is 9th from the right end?
How many such consonants are there which are immediately followed by a consonant and immediately preceded by a vowel?
Which letter is 5th to the right of the 3rd from the left end in the given arrangement?
If in each number, all the three digits are arranged in ascending order within the number, which of the following will be the second lowest number after rearrangement?