Range provides two properties that allow us to access the first element of a range:

val myRange = 1..10 
println("first " + myRange.first)
println("start " + myRange.start)

first and last properties are pretty much same, behind the scene start property calls first property.

It also provides two properties that allow us to access the last element of a range:

println("last " + myRange.last)
println("endInclusive " + myRange.endInclusive)

In these examples, the first block of code will return 1 and the second block of code will return 10.