Question

A={3,6,,9,12,15,18,21},B={4,8,12,16,20},C={2,4,6,8,10,12,14,16},D={5,10,15,20}A-C

Answer 1

Hi

Here is ur answer

U 've to find A - C

Given

A = { 3, 6, 9, 12, 15, 18, 21}

c =  { 2, 4, 6, 8, 10, 12, 14, 16}

Hence,

A - C and write the numbers left in A , as A is given at first,

 =  { 3, 6, 9, 12, 15, 18, 21} - { 2, 4, 6, 8, 10, 12, 14, 16}

Remove the common terms,

A - C = {3, 9, 15, 18, 21}

Hope it helps U