Target Exam

CUET

Subject

General Test

Chapter

General Ability

Topic

Odd One Out/Classification

Question:

In the following question, four number pairs are given. In each pair the number on left side of (-) is related to the number of the right side of (-) with some Logic/Rule /Relation. Three pairs are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives. (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)

Options:

9 - 810

11 - 1452

7 - 392

13 - 2368

Correct Answer:

13 - 2368

Explanation:

The logic followed here is:

(Ist number)2 × (ist number + 1) = second number

Option 1              9 - 810

                        (9)2 × (9 + 1) = second number

                         81 × 10 = 810

Option 2            11 - 1452

                         (11)2 × (11 + 1) = second number  

                           121 × 12 = 1452                     

Option 3              7 - 392

                        (7)2 × (7 + 1) = second number                            

                       49 × 8 = 1452                      

Option 4           13 - 2368

                      (13)2 × (13 + 1) = second number                                                   

                     169 × 14 = 2366 ≠ 2368 (odd)