diff --git a/codewars/7kyu/visible-dots-on-a-die/koronya.js b/codewars/7kyu/visible-dots-on-a-die/koronya.js new file mode 100644 index 000000000..52bfb7598 --- /dev/null +++ b/codewars/7kyu/visible-dots-on-a-die/koronya.js @@ -0,0 +1,13 @@ +// [JS][7kyu] Visible Dots On a Die +// visible-dots-on-a-die +// https://www.codewars.com/kata/5a39724945ddce2223000800/train/javascript + +const totalAmountVisible = (topNum, numOfSides) => { + const total = (numOfSides * (numOfSides + 1)) / 2 + const hidden = numOfSides + 1 - topNum + return total - hidden +} + +totalAmountVisible(3, 6) === 17 +totalAmountVisible(3, 8) === 30 +totalAmountVisible(1, 12) === 66