mineral thing w/ count

mineral = {
    ["Native Copper"]="Rusty looking",
    ["Graphite"]="Black/Dirt looking",
    ["Dolomite"]="White/crystal-like",
    ["Calcite"]="Clear/Crystal like",
    ["Pyrite"]="Gold looking",
    ["Chalcopyrite"]="Gold looking",
    ["Alabaster"]="No desc. Alabaster",
    ["Selenite"]="Crystal glass like",
    ["Satin spar"]="Pink shing",
    ["Barite"]="Shiny",
    ["Crystalline Quartz"]="Diamond look",
    ["Rose Quartz"]="Pinkish/Crystal look",
    ["Chert"]="Yellow/Tan color",
    ["Chalcedony"]="Crystal look",
    ["Orhtoclase Feldspar"]="Pinkish",
    ["Plagioclase Feldspar"]="Yellowish",
    ["Biotite Mica"]="Brown/Black flaky",
    ["Muscovite Mica"]="Shiny/Flaky",
    ["Talc"]="Grey", ["Kaolin"]="White/Chalky",
    ["Hornblende"]="No desc. Hornblende",
    ["Spodumene"]="White/grey",
    ["Tourmaline"]="Green/blue color",
    ["Magnetite"]="No desc. Magnetite",
    ["Hematite"]="Rusty",
    ["Limonite"]="Dark brown",
    ["Bauxite"]="Orange/brown color",
    ["Fluorite"]="Sea green",
    ["Halite"]="Crystal like plastic",
    ["Apatite"]="Food lol."
}



local function getRandomIndexes(t)
    local count = 0

    for i,v in pairs(t) do
        count = count + 1
    end

    local rand1 = math.random(count/3)
    local rand2 = rand1 + math.random(count/3)
    local rand3 = rand2 + math.random(count/3)

    local res1, res2, res3
    local num = 1

    for index, _ in pairs(t) do
        if num == rand1 then
            res1 = index
        end
        if num == rand2 then
            res2 = index
        end
        if num == rand3 then
            res3 = index
        end
        num = num + 1
    end

    return res1, res2, res3
end

term.clear()
term.setCursorPos(1,1)
while true do
    sel = math.random(1,3)
    numq, numw, nume = getRandomIndexes(mineral)

    print("The mineral description is!")
    print(mineral[numq].." ..")
    print("")
    print("The three ones are")

    if sel == 1 then
        print(numq)
        print(numw)
        print(nume)
    elseif sel == 2 then
        print(numw)
        print(numq)
        print(nume)
    else
        print(numw)
        print(nume)
        print(numq)
    end

    print("")
    resp = read()
    if resp == numq then
        print("Correct!")
        sleep(1)
    else
        print("Wrong.. The right one is..")
        print(numq)
        sleep(1)
    end

    term.clear()
    term.setCursorPos(1,1)
end