‘Classification’ means- Sorting the elements given in a group, category or classes based on common properties and separating the remaining words, letters or digits. The questions under it are usually based on the English alphabet, based on the properties of objects and the number of similar properties. In this type of question, a group of four or five elements is given, in which three or four elements exhibit the same qualities in one form or in some other form or in relation to one another, while one is related to each other. And only one element shows different qualities from all three or four. The candidate is expected to separate the different or the foreign entity from the given class. It is necessary to note in this perspective that the candidate should have known all the conditions of equality which are commonly asked. To solve the questions related to classification, first, try to establish an alliance between all the elements present in the options. The element that is outside the established relationship will be the answer.
Based on the Scenario, there are four or five words or groups of four or five words, three or four of which are similar in some way. You have to choose one of these words or word groups that do not match the other word or word group. In order to solve the questions based on the word, it is very important to be aware of general studies.
Example 1. Four of the following five are somehow identical and form a group. What one from the group is not related to others?
(a) Paddy (b) Wheat (c) Millet (d) Sesame (e) Tide
Solution: (d) All other crops are grain except ‘sesame’ whereas sesame is an oilseed crop.
Example 2. Three of the following four word groups are somehow identical and form a group. Which one is not included in that group?
(a) Madhya Pradesh-Bhopal
Solution: (c) In every group second term is the capital of the first term except ‘Maharashtra-Nagpur’. Nagpur is a city in Maharastra.
Under the letter-based group, there are four or five letter groups, three or four of which are similar in some way. You have to choose one of these groups which do not match with the other letter groups. To solve the questions based on the letter, it is necessary to know the numeric value of each letter in the English alphabet and the opposite of each Alphabet.
Example 1. Four of the following five are similar in some way and they create their own group. Which one does not belong to the group?
(a) HK (b) MP (c) BD (d) TW (e) NO
Solution: (C) The second letter in all other groups except BD is three letters next from the first letter.
Example 2. The three of the following four are in some way or the other, but make a group, which one is different from that group?
(a) CX (b) VF (c) RI (d) KP
Solution: (b) In every group except VF, both characters are opposite letters to each other.
Under the number based classification, four or five numbers are given, three or four of which are similar in some way. You have to choose one of these numbers which do not match with other numbers. Before solving the questions based on the number, you must be aware of even numbers, odd numbers, prime numbers, square roots, and cube roots.
Example 1. Three of the following four are somehow identical in some way. So they form a group. which number does not belong to that group?
(a) 64 (b) 81 (c) 27 (d) 121
Solution: (c) Except 27 all other complete Square numbers.
Example 2. Four of the following five numbers are similar in nature, so they form a group. which number does not belong to that group?
(a) 23 (b) 21 (c) 37 (d) 17 (e) 31
Solution: (b) except 21 all other are prime numbers.