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Question

In the word VIBGYOR, which of the following two consecutive letters have the least difference between them in terms of letters of the English alphabet?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
O and R

VIBGYOR Letter Difference Analysis

The question asks to find the pair of consecutive letters in the word VIBGYOR that have the smallest difference in their alphabetical positions.

Alphabetical Positions

First, let's list the letters of the word VIBGYOR and their corresponding positions in the English alphabet:

Letter V I B G Y O R
Alphabet Position 22 9 2 7 25 15 18

Consecutive Letter Pairs and Differences

Now, let's examine the pairs of consecutive letters in VIBGYOR and calculate the absolute difference between their alphabetical positions:

  • I and B: Positions are 9 and 2. Difference = $|9 - 2| = 7$.
  • B and G: Positions are 2 and 7. Difference = $|2 - 7| = 5$.
  • G and Y: Positions are 7 and 25. Difference = $|7 - 25| = 18$.
  • Y and O: Positions are 25 and 15. Difference = $|25 - 15| = 10$.
  • O and R: Positions are 15 and 18. Difference = $|15 - 18| = 3$.

Identifying the Least Difference

Comparing the calculated differences:

  • I and B: 7
  • B and G: 5
  • G and Y: 18
  • Y and O: 10
  • O and R: 3

The smallest difference among these consecutive pairs is 3, which occurs between the letters O and R.

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