Classification

Classification

Classification means to classify a thing/ letter/ word/ number from a group on the basis of their general property, shape, size, colour, kind etc.
 

Classification Questions in Competitative Exams can be divided into two types:

1. Four words will be given, out of which three words be alike in a certain way and One word will be different from other three words. We have to figure out the Different/Unlike Word.

Examples:

Sun Moon Star Universe Sun, Moon, Stars are part of Universe
Brother Niece Cousin Uncle Brother is direct blood relation
Fry Peel Boil  Bake Fry, Boil, Bake are different mode of Cooking. But Peel is not.
Tomato Guava Carrot Brinjal Tomato, Guava, Carrot can be eaten raw but not brinjal not
Radius Arc Diameter Diagonal Radius, Arc, Diameter are Associated with Circle but diagonal is not related to circle.
Inch Meter Yard Quart Inch, Meter, yard are units of Distance but Quart not
Heart Ear Lung Eye Ear, Lung, Eye are in Pair in Human Body, But Heart is one
Hostel Hotel Motel Club Hostel, Hotel, Motel are places of staying but Club is a place of Entertainment
Nylon Wool Silk Jute Except Nylon all other are Natural Fibre
Month Season Year Week Month, Year, Week are precise measurement of days but Season not
 

2. Four numbers will be given, out of which three numbers be alike in a certain way and One number will be different from others three numbers. We have to figure out the Different/Unlike number.

Examples:

43 53 63 73 All Numbers are Prime except 63
51 144 64 121 All Numbers are Perfect Sqaure except 51
6 12 18 7 All Numbers are composite except 7. 7 is Prime
21 39 51 83 All Numbers are composite except 83. 83 is Prime
11 13 15 17 All Numbers are Prime Except 15
12 10 11 15 All Numbers are Composite Except 11. 11 is Prime.
87 49 132 154 49 is Perfect Square where as other are not
21 69 81 93 81 is Perfect Square where as other are not
140 240 360 480 All Numbers are multiple of 120 except 140
232 431 612 813

Product of Digit in all numbers is 12 excpet 813

232=> 2*3*2=12

431=>4*3*1=12

612=>6*1*2=12

813=>8*1*3=24

215 126 65 28

All other numbers follow (Number3+1) except 215

126=53+1

65=43+1

28=33+1

5678 5467 3456 2345 All the Digits in Number are Consecutive except in 5467
392 326 414 248

3*9*2=54 (54 is not perfect sqaure)

3*2*6=62

4*1*4=42

2*4*8=82

1754 2690 7324 9611

The Sum of all Digit is 17 in all Numbers except 136

153 147 136 119

Only 119 has different factors, 7 and 17, and no factor is repeated.

7 15 31 57

All Number except 57 can be expressed as the Power of 2 minus 1

7=23-1

15=24-1

31=25-1