Question : Directions: Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. Eg. 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.)
Option 1: 216 : 40
Option 2: 72 : 22
Option 3: 112 : 32
Option 4: 312 : 82
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Correct Answer: 216 : 40
Solution :
Let's check the options –
First option:
216 : 40→(216 + 16) ÷ 4 = 232 ÷ 4 = 58 ≠ 40
Second option:
72 : 22→(72 + 16) ÷ 4 = 88 ÷ 4 = 22
Third option:
112 : 32→(112 + 16) ÷ 4 = 128 ÷ 4 = 32
Fourth option:
312 : 82→(312 + 16) ÷ 4 = 328 ÷ 4 = 82
Hence, the first option is correct.
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