21 is related to 220 by certain logic. Following the same logic, 72 is related to 781. To which of the following is 27 related,
following the same logic? (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 /deleting /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.)

Question

Accepted Answer

Step 1: Analyze the given pairs:
- 21 is related to 220
- 72 is related to 781

Step 2: Check the relationship between 21 and 220:  
Try to find a formula or operation on 21 that results in 220.

So the logic is:  
Related number = original number * 10 + original number * 1 - 11   
= original number * 11 - 11   
= 11 * (original number - 1)

Step 3: Apply the logic to 27:      
Related number = 11 * (27 - 1) = 11 * 26 = 286

Step 4: Check options:
Option 2 is 286, which matches the calculated value.

Answer: 286

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