Verified Answer :

toriswem2020

The answer is 6

There are 6 subsets that have exactly two elements

starlovesabby

Answer:

6

Step-by-step explanation:

{1,2}     {2,1}     {3,1}     {4,1}

{1,3}     {2,3}    {3,2}     {4,2}

{1,4}     {2,4}     {3,4}    {4,3}

Remove duplicates {2,1}, {3,1}, {4,1}, {3,2}, {4,2}, {4,3}

Final Answer = 6 subsets remain

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