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Question 121
How many such pairs of letters are there in the word PREAMBLE each of which has as many letters between them in the word as in the English alphabet ?
Solution
For the given word PREAMBLE, lets start with P. Now PR is not a possible pair as it does not have any letter between them whereas in english alphabets there is 1 letter between P and R. Similarly PE and PA pairs are also not possible. On checking in a similar manner, we can see that EB and AE are the only pairs which meets the requirements. So the correct option is option 3.
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