Question

B={df,g)

G= {a,d,h}
Find the intersection of B and G.
Find the union of B and G.
Write your answers using set notation (in roster form).​

Answer 1

We have two sets of letters
`B=\{d,f,g\}` and
`G=\{a,d,h\}`.

Intersection of sets
`B` and
`G` is set
`I` that contains elements that are common to
`B` and
`G`, mathematically

`I=\{x:x\in B\wedge x\in G\}`

Or simply
`I=B\cap G=\{d\}`.

Union if sets
`B` and
`G` is set
`U` that contains elements from
`B` or
`G` thus

`U=\{x:x\in B\vee x\in G\}`

Or again simply
`U=B\cup G=\{d,f,g,a,h\}`.

Hope this helps.