If `A ={a, b, c, d }` and `B= {d,e}` then find `AUB`

Let A = { b,d,e,f }, B = { c,d,g,h} and C = {e,f,g,h} .Find : ( A- B ) uu (B-A)

Let A = { b,d,e,f }, B = { c,d,g,h} and C = {e,f,g,h} .Find : A- B

If A={a,b},B={c,d},C={d,e} , then {(a,c),(a,d),(a,e),(b,c),(b,d),(b,e)} is equal to

If A={a,b},B={c,d},C={d,e} , then {(a,c),(a,d),(a,e),(b,c),(b,d),(b,e)} is equal to

Let A = { b,d,e,f }, B = { c,d,g,h} and C = {e,f,g,h} .Find : B-C

Let A = { b,d,e,f }, B = { c,d,g,h} and C = {e,f,g,h} .Find : C -A

In a A B C , D and E are points on the sides A B and A C respectively such that D E || B C If A D=6\ c m , D B=9\ c m and A E=8\ c m , find A C .

In a A B C , D and E are points on the sides A B and A C respectively such that D E// B C If A D=4 , A E=8 , D B=x-4 , and E C=3x-19 , find x .

In A B C ,\ D and E are the mid-points of A B and A C respectively. Find the ratio of the areas of A D E and A B C .

In a A B C , D and E are points on A B and A C respectively such that D E||B C . If A D=2. 4 c m ,\ \ A E=3. 2 c m ,\ \ D E=2c m and B C=5c m , find B D and C E .