How many such pairs of letters are there in the word ‘SUBSTANCE’, each of which has as many letters between them in the word (in both forward and backward directions) as in the English alphabetical series?
(a) None
(b) One
(c) Two
(d) Three
(e) More than three
Answers
Answer:
Oprion "D" Three
Explanation:
1. U-S (SUBSTANCE)
2.A-C (SUBSTANCE)
3.S-T (SUBSTANCE)
Concept: Problem-solving techniques such as logical reasoning entail deciphering a scenario's set of rules. Algorithms are used to describe these rules or procedures. Testing various sets of instructions, or algorithms, to see which set of guidelines results in the right answer is a key component of logical reasoning.
Given: The word 'SUBSTANCE'
To find: No. of pairs of letters in the word 'SUBSTANCE' each of which has as many letters between them in the word (in both forward and backward directions) as in the English alphabetical series
Solution: The alphabetical order of the alphabets are
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The alphabetical order of the alphabets from backwards is
Z Y X W V U T S R Q P O N M L K J I H G F E D C B A
Refer the picture for clear concept below.
Between U and S there is one alphabet according to backward alphabetical order, i.e., T and here in the question there is one alphabet between U and S i.e., B, therefore 1 pair is US.
Between S and T there is no alphabet between them according to alphabetical order and here in the question also there is no alphabet between S and T, therefore another pair is ST.
Between A and C there is one alphabet according to alphabetical order, i.e., B and here in the question there is one alphabet between A and C i.e., N, therefore 1 pair is AC.
Hence, there are total three pairs of letters in the word 'SUBSTANCE' each of which has as many letters between them in the word (in both forward and backward directions) as in the English alphabetical series.
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