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
Answers
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