Question

When both trains meet, they are at the same point. Therefore, both trains are equidistant from Chennai.

• A. N
• B. 0
• C. L
• D. K

Answer 1

The Correct Option is A

The series follows a pattern where each letter is moving backward in the alphabet by increasingly larger steps:
- From Z to Y: 1 step back
- From Y to X: 2 steps back
- From X to V: 3 steps back
- From V to S: 4 steps back
Following this pattern, the next letter should be 5 steps back from S:
- S → R (1 step)
- R → Q (2 steps)
- Q → P (3 steps)
- P → O (4 steps)
- O → N (5 steps)
So, the next alphabet is N.
Answer: A i.e. (N)

Answer 2

Assigning each letter of the alphabet its position number, with A as 1 and Z as 26, turns this letter series into a plain number series, which is often the fastest way to spot the underlying rule.

The gap between each letter and the next one in the series grows by exactly one place every step, one step back, then two, then three, then four. Continuing that same rule, the next gap must be five places back from the last letter given, S.

S sits at position 19. Moving five places back from position 19 gives position 14, and position 14 corresponds to the letter N.

1. Option A (N): Position 14 is exactly five places behind S at position 19, matching the required gap, so this is correct.
2. Option B (O): O sits at position 15, only four places behind S, one place short of the required gap, so this is incorrect.
3. Option C (L): L sits at position 12, seven places behind S, too large a gap, so this is incorrect.
4. Option D (K): K sits at position 11, eight places behind S, also too large a gap, so this is incorrect.

Since the required gap of five places behind S lands exactly on position 14, the next letter in the series is N.

the correct answer is Option A: N.