Question

If a=x:x€n,less than6 and b= x:x€,3lessthanx less than 8 find a-b not equal to b-a

Answer 1

Given A = { x : x€ N, x < 6 }

=> A = { 1,2,3,4,5 }

B = { x: x€ N , 3 < x < 8 }

=> B = { 4,5,6,7 }

i ) A - B = { 1,2,3,4,5 } - { 4,5,6,7 }

= { 1,2,3 }

ii ) B - A = { 4,5,6,7 } - { 1,2,3,4,5 }

= { 6,7 }

Therefore.,

A - B ≠ B - A

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