The position of the first and sixth letters in the word CONTEXTUAL are interchanged. Similarly, the positions of the second and the seventh letters are interchanged , and so on. Which of the following will be the fourth letter from the right end after the rearrangement?

Given word : CONTEXTUAL

After making changes as per given in the question , the above word becomes as follows:

XTUALCONTE . Hence, 4th letter from the right end is O.

quicker method:

    Total no of letters in the given word = 10.

    4th letter from the right means (10 - 4 + 1 =) 7th letter from the left of the word obtained after rearrangement. Again, read the question , we come to know that, the positions of the second and seventh letters are interchanged. Hence the required letter is the second letter of the given word which is O.