diff --git a/kadai04.js b/kadai04.js
index b2dedf1..ec635c6 100644
--- a/kadai04.js
+++ b/kadai04.js
@@ -1,6 +1,6 @@
 function CountDown() {
     var count = 4, tmID, infobox = document.getElementById("start"), fin = document.getElementById("fin"), are = document.querySelectorAll("div");
-    //const num = Math.floor(Math.ramdom()*10+1);
+    num = Math.floor(Math.ramdom()*10+1);
     function countDown() {
 	if (--count == 0) {
 	    infobox.innerHTML = "時間切れ";
@@ -13,7 +13,7 @@
     function startCountDown() {
 	tmID = setTimeout(countDown, 1000);
 	infobox.removeEventListener("click", startCountDown, false);
-	are[Math.floor(Math.ramdom()*10+1)].addEventListener("click", stopCountDown, false);
+	are[num].addEventListener("click", stopCountDown, false);
     }
     function stopCountDown() {
 	if (count >= 0){
@@ -21,8 +21,8 @@
 	    infobox.innerHTML = "成功";
 	}
 	fin.innerHTML = "終了";
-	are[Math.floor(Math.ramdom()*10+1)].innerHTML = "正解";
-	are[Math.floor(Math.ramdom()*10+1)].removeEventListener("click", stopCountDown, false);
+	are[num].innerHTML = "正解";
+	are[num].removeEventListener("click", stopCountDown, false);
     }
     infobox.addEventListener("click", startCountDown, false);
 };