Answer:
A⊆B
Step-by-step explanation:
⊆ = subset
⊂ = Proper subset
Subset: A is subset of B if one or more than one or all elements of B is also element of A.
A⊆B
Proper subset: At least one element of B is not an element of A.
A⊂B
A={x|x∈N and 3<x<10]
3<x<10 means all natural number between 3 and 10.
Then A={4,5,6,7,8,9}
And B= the set of natural number between 3 and 10
B={4,5,6,7,8,9}
Since set A contains all element of B. Then A is subset of B
A⊆B
