Question

If A = (x:x e N and x < 15} and B= {x:x e N and x < 3}
then find A-B and write it in the set builder form.​

Answer 1

A={1,2,3,4,5,6,7,8,9,10,11,12,13,14}

A={1,2,3,4,5,6,7,8,9,10,11,12,13,14}B={1,2}

A-B={3,4,5...14}

Answer 2

Answer:

A - B = {x : x = N and 3 < x < 15}

Step-by-step explanation:

Set Builder form Of A

A = {x : x = N and x < 15}

A = {1,2,3,4,5,6,7,8,9,10,11,12,13,14}

Set Builder Form Of B

B = {x : x = N and x < 3}

B = {1,2,3}

Now, A-B

=> {1,2,3...14} - {1,2,3}

=> {4,5,6,7,8,9,10,11,12,13,14}

Set Builder Form Of A-B

=> {x : x = N and 3 < x < 15}