Given,
a) The set spoken by kevin is { latin, weish , german , porteguese,ethopian}
The equaivalent sets are those pair of sets that have the equal number of elements in their set
The equivalent set of set spoken by kevin is the set spoken by Manuel.
Hence, the answer is " Manuel{Xhosa, russian, yoruba, arabic , tagalog}".
b)The set spoken by Hans is { urdu , bengali}
The sets with equal number and same elements are called equal sets.
The equal set of Hans is Greg.
Hence, the answer is " Greg{Bengali, Urdu}"
c) the two students whose spoken set is neither equivalent and nor equal is Kaitlin and Hans.
Hence, Kaitlin and Hans spoken set is neither equivalent and nor equal