Question

Find out how many such pairs of letters are there in the given word each of which has many letters between them in the word as in the English alphabet A D E Q U A T E L Y

Answer 1

Answer:

3 pairs, DE, QT and LQ

Explanation:

First, Let me breakdown the question:

The condition is: The numbers of letter in between a pair must be equal to the  actual letters in order.

For example: ADEQUATELY:

we know D comes after A, but there is no Letter between A and D, i.e AD so

it is zero, but condition says it must be 2, i.e A - B,C - D, B,C represents 2,

So we will go for DE. E comes after D and there is no letter in this pair, and there is no letter in the alphabets as well, like ABCDE, so DE is a new pair. Same for Q and T. In English alphabet, Q - R,S - T: and Q - U,A - T: So there are two letters.

The last one is interesting. Since the question does not says that you cannot go reverse,  If you reverse ADE- Q,U,A,T,E,L - Y, we will get L, E, T, A, U, Q. and in actuall alphabet, we get L, M, N, O, P , Q. so if we count the letters, we get count(M, N O, P) = count(E, T, A, U). Since sequence in-between doesn't matters, so this is how answer comes out