- Go into iex. Create and run the functions that do the following
`list_concat.([1,2,3], [4,5,6]) #=> [1,2,3,4,5,6]`

`sum.(1, 2, 3) #=> 6`

`pair_tuple_to_list.( { 8, 7 } ) #=> [ 8, 7 ]`

##
A Possible Solution</summary>

iex(1)> list_concat = fn a, b -> a ++ b end
#Function<erl_eval.12.17052888>
iex(2)> list_concat.([1,2,3], [4,5,6])
[1, 2, 3, 4, 5, 6]
iex(3)> sum = fn a, b, c -> a + b + c end
#Function<erl_eval.18.17052888>
iex(4)> sum.(1,2,3)
6
iex(5)> pair_tuple_to_list = fn {a, b} -> [ a, b ] end
#Function<erl_eval.6.17052888>
iex(6)> pair_tuple_to_list.({ 8, 7 })
[8, 7]

</details>

iex(1)> list_concat = fn a, b -> a ++ b end #Function<erl_eval.12.17052888> iex(2)> list_concat.([1,2,3], [4,5,6]) [1, 2, 3, 4, 5, 6] iex(3)> sum = fn a, b, c -> a + b + c end #Function<erl_eval.18.17052888> iex(4)> sum.(1,2,3) 6 iex(5)> pair_tuple_to_list = fn {a, b} -> [ a, b ] end #Function<erl_eval.6.17052888> iex(6)> pair_tuple_to_list.({ 8, 7 }) [8, 7]