state gov TNPSC Group 4 (தமிழ்நாடு குழு IV) Mock Test 2025 Logical Reasoning Classification Number Based
Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.. 13-Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
1
17 - 14 - 15
2
33 - 26 - 25
3
39 - 33 - 30
4
22 - 18 - 20