Question : Directions: In the following question, select the one which is different from the other three alternatives.
Option 1: 16
Option 2: 56
Option 3: 128
Option 4: 2
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Correct Answer: 56
Solution : Let's check the options – First option: 16; 2 4 = 16; 16 can be expressed as a power of 2. Second option: 56; 56 cannot be expressed as a power of 2. Third option: 128; 2 7 = 128; 128 can be expressed as a power of 2. Fourth option: 2; 2 1 = 2; 2 can be expressed as a power of 2.
So, the second option is different from the other three options as 56 cannot be expressed as a power of 2. Hence, the second option is correct.
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