M={2,3,4,6,7} d={2,4,6} intersection of m and d. union of m and d

M ∪ D= { 2, 3, 4 , 6 , 7}

M ∩  D= { 2, 4 , 6}

Step-by-step explanation:

UNION OF SETS : The union of two sets P and Q  is the set of elements which belong in A or in B or in both.

Here,  M =  {2,3,4,6,7}   D  =   {2,4,6}

⇒ M ∪ D= { 2, 3, 4 , 6 , 7}

INTERSECTION OF SETS :  The intersection  of two sets P and Q  is the set of elements which belong in A and B both.

Here,  M =  {2,3,4,6,7}   D  =   {2,4,6}

         ⇒ M ∩  D= { 2, 4 , 6}

i hope this is what you were looking for.

see attached graph