Difficulty: Easy
Correct Answer: N
Explanation:
Introduction / Context:
This question tests your understanding of positions of letters in the English alphabet when counting from the right end, that is from Z towards A. You must find which letter lies at a specific position from the right. Such alphabet position questions are common in reasoning sections and are straightforward if you know basic positional relationships.
Given Data / Assumptions:
Concept / Approach:
There are two ways to handle this. One is to count directly from Z backwards, which is simple because 13 is not a large number. The other is to use a positional relation: the k-th letter from the right is the (27 - k)-th letter from the left, since there are 26 letters in total. Using this formula turns a “from the right” position into a more familiar “from the left” position.
Step-by-Step Solution:
Let us use the relation method. If a letter is k-th from the right in a 26 letter alphabet, then its position from the left is 27 - k.
Here k = 13. So the position from the left is 27 - 13 = 14.
Now list or recall the alphabet sequence up to the 14th letter: A(1), B(2), C(3), D(4), E(5), F(6), G(7), H(8), I(9), J(10), K(11), L(12), M(13), N(14).
The 14th letter from the left is N.
Therefore, the 13th letter from the right is N.
Verification / Alternative check:
As a direct check, we can count backwards from Z. From the right: Z(1), Y(2), X(3), W(4), V(5), U(6), T(7), S(8), R(9), Q(10), P(11), O(12), N(13). We again land on N as the 13th letter from the right. Both methods agree, confirming that N is the correct answer.
Why Other Options Are Wrong:
L is the 12th letter from the left, so from the right that would correspond to another position. M is 13th from the left, not 14th. O and P are 15th and 16th from the left respectively. None of these correspond to the 13th position from the right according to the relation 27 - k. Only N satisfies the required position.
Common Pitfalls:
A common mistake is to confuse “13th from right” with “13th from left” or to forget the 27 - k relation. Some candidates also miscount when listing the alphabet in their mind. Writing down at least part of the sequence A to Z and marking positions is a good way to avoid these errors, especially under exam pressure.
Final Answer:
The letter that is 13th from the right end in the English alphabet is N.
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