{"id":2003,"date":"2021-11-29T21:04:04","date_gmt":"2021-11-29T12:04:04","guid":{"rendered":"https:\/\/www.roundown.net\/nyushi\/?p=2003"},"modified":"2021-11-29T21:04:04","modified_gmt":"2021-11-29T12:04:04","slug":"iks202101","status":"publish","type":"post","link":"https:\/\/www.roundown.net\/nyushi\/iks202101\/","title":{"rendered":"\u533b\u79d1\u6b6f\u79d1\u59272021\uff1a\u7b2c1\u554f"},"content":{"rendered":"<hr \/>\n<p>\\(0\\) \u304b\u3089 \\(9\\) \u307e\u3067\u306e\u76f8\u7570\u306a\u308b\u6574\u6570\u304c \\(1\\) \u3064\u305a\u3064\u66f8\u304b\u308c\u305f \\(10\\) \u500b\u306e\u7403\u304c, \u888b\u306e\u4e2d\u306b\u5165\u3063\u3066\u3044\u308b.\r\n\u3053\u306e\u888b\u304b\u3089\u7403\u3092\u7121\u4f5c\u70ba\u306b \\(1\\) \u500b\u53d6\u308a\u51fa\u3057\u3066\u306f\u3082\u3068\u306b\u3082\u3069\u3059\u64cd\u4f5c\u3092 \\(3\\) \u56de\u7e70\u308a\u8fd4\u3057\u305f\u3068\u304d,\r\n\u53d6\u308a\u51fa\u3057\u305f\u7403\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u6570\u3092\u9806\u306b \\(a_1 , a_2 , a_3\\) \u3068\u3059\u308b.\r\n\u307e\u305f \\(b_1 = 10 +a_1\\) , \\(b_2 = 20 +a_2\\) , \\(b_3 = 30 +a_3\\) \u3068\u304a\u304d,\r\n\\(b_1 , b_2 , b_3 , b_1 +b_2 +b_3\\) \u306e \\(1\\) \u306e\u4f4d\u3092\u56db\u6368\u4e94\u5165\u3057\u3066\u3048\u3089\u308c\u308b\u6570\u3092\u305d\u308c\u305e\u308c \\(c_1 , c_2 , c_3 , c_4\\) \u3068\u3059\u308b.\r\n\u3053\u306e\u3068\u304d\u4ee5\u4e0b\u306e\u5404\u554f\u3044\u306b\u7b54\u3048\u3088.<\/p>\r\n<ol>\r\n<li><p><strong>(1)<\/strong>\u3000\\(b_1 +b_2 +b_3 = 70\\) \u3068\u306a\u308b\u78ba\u7387\u3092\u6c42\u3081\u3088.<\/p><\/li>\r\n<li><p><strong>(2)<\/strong>\u3000\\(c_4 = 90\\) \u3068\u306a\u308b\u78ba\u7387\u3092\u6c42\u3081\u3088.<\/p><\/li>\r\n<li><p><strong>(3)<\/strong>\u3000\\(c_1 = 20\\) \u304b\u3064 \\(c_1 +c_2 +c_3 \\gt c_4\\) \u3068\u306a\u308b\u78ba\u7387\u3092\u6c42\u3081\u3088.<\/p><\/li>\r\n<\/ol>\r\n<hr \/>\r\n<!--more-->\r\n<h4>\u3010 \u89e3 \u7b54 \u3011<\/h4>\r\n<p><strong>(1)<\/strong><\/p>\r\n<p>\\(a_1 , a_2 , a_3\\) \u306e\u6570\u306e\u9078\u3073\u65b9\u306f \\(10^3 = 1000\\) \u901a\u308a.<br \/>\r\n\\(S = a_1 +a_2 +a_3\\) \u3068\u304a\u304f\u3068, \u6761\u4ef6\u3088\u308a \\(S = 10\\) .<br \/>\r\n\u3053\u308c\u3092\u307f\u305f\u3059 \\(a_1\\) \uff5e \\(a_3\\) \u306e\u9078\u3073\u65b9\u306f, \\(10\\) \u500b\u306e\u3007\u3068 \\(2\\) \u672c\u306e\uff5c\u3092\u4e26\u3079\u308b\u65b9\u6cd5\u3092\u8003\u3048, \u3053\u306e\u3046\u3061 \\(3\\) \u3064\u306e\u6570\u304c \\(\\{ 10 , 0 , 0 \\}\\) \u3068\u306a\u308b \\(3\\) \u901a\u308a\u3092\u9664\u3044\u305f\u65b9\u6cd5\u306b\u7b49\u3057\u304f\r\n\\[\r\n{} _ {12} \\text{C}{} _ {2} -3 = \\dfrac{12 \\cdot 11}{2} -3 = 63 \\ \\text{\u901a\u308a}\r\n\\]\r\n\u3088\u3063\u3066, \u6c42\u3081\u308b\u78ba\u7387\u306f\r\n\\[\r\n\\underline{\\dfrac{63}{1000}}\r\n\\]\r\n<p><strong>(2)<\/strong><\/p>\r\n<p>\u6761\u4ef6\u3088\u308a, \\(S\\) \u306f\u56db\u6368\u4e94\u5165\u3057\u3066 \\(30\\) \u3068\u306a\u308b, \u3059\u306a\u308f\u3061 \\(25 \\leqq S \\leqq 27\\) .<\/p>\r\n<ul>\r\n<li><p>\\(S = 27\\) \u3068\u306a\u308b\u306e\u306f, \\(1\\) \u901a\u308a.<\/p><\/li>\r\n<li><p>\\(S = 26\\) \u3068\u306a\u308b\u306e\u306f, \\(3\\) \u3064\u306e\u6570\u304c \\(\\{ 9 , 9 , 8 \\}\\) \u3068\u306a\u308b\u3068\u304d\u3067, \\(3\\) \u901a\u308a.<\/p><\/li>\r\n<li><p>\\(S = 25\\) \u3068\u306a\u308b\u306e\u306f, \\(3\\) \u3064\u306e\u6570\u304c \\(\\{ 9 , 9 , 7 \\} , \\{ 9 , 8 , 8 \\}\\) \u3068\u306a\u308b\u3068\u304d\u3067, \\(3+3 = 6\\) \u901a\u308a.<\/p><\/li>\r\n<\/ul>\r\n<p>\u3088\u3063\u3066, \u6c42\u3081\u308b\u78ba\u7387\u306f\r\n\\[\r\n\\dfrac{1 +3 +6}{1000} = \\underline{\\dfrac{1}{100}}\r\n\\]\r\n<p><strong>(3)<\/strong><\/p>\r\n<p>\\(c_1 = 20\\) \u3088\u308a, \\(5 \\leqq a_1 \\leqq 9\\) ... [1] .<br \/>\r\n\\(c_1 , c_2 , c_3\\) \u306e\u3046\u3061\u5207\u4e0a\u3052\u3068\u306a\u308b\u500b\u6570\u3092 \\(U\\) , \\(S\\) \u3092\u56db\u6368\u4e94\u5165\u3057\u305f\u6570\u3092 \\(R\\) \u3068\u3059\u308c\u3070, \\(c_1 +c_2 +c_3 \\gt c_4\\) \u3068\u306a\u308b\u306e\u306f\r\n\\[\r\nU \\gt \\dfrac{R}{10}\\quad ... [2]\r\n\\]\r\n[1] \u3088\u308a, \\(1 \\leqq U \\leqq 3\\) \u306a\u306e\u3067, \u5834\u5408\u5206\u3051\u3057\u3066\u8003\u3048\u308b.<\/p>\r\n<ol>\r\n<li><p><strong>1*<\/strong>\u3000\\(U = 1\\) \u306e\u3068\u304d<br \/>\r\n\\(5+0+0 = 5 \\leqq S \\leqq 17 = 9+4+4\\) \u306a\u306e\u3067, \\(R = 1 , 2\\) .<br \/>\r\n\u3086\u3048\u306b [2] \u306f\u6210\u7acb\u3057\u306a\u3044.<\/p><\/li>\r\n<li><p><strong>2*<\/strong>\u3000\\(U = 2\\) \u306e\u3068\u304d<br \/>\r\n\\(5+5+0 = 10 \\leqq S \\leqq 22 = 9+9+4\\) \u306a\u306e\u3067, \\(R = 1 , 2\\) .<br \/>\r\n\u3086\u3048\u306b [2] \u304c\u6210\u7acb\u3059\u308b\u306e\u306f\r\n\\[\r\n10 \\leqq S \\leqq 14\r\n\\]\r\n\\(S = 10 , \\cdots , 14\\) \u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066, \u3053\u308c\u3092\u307f\u305f\u3059 \\(a_1\\) \uff5e \\(a_3\\) \u306e\u9078\u3073\u65b9\u306f, \\(a_2 , a_3\\) \u306e\u3044\u305a\u308c\u304b\u304c\u5207\u4e0a\u3052\u3068\u306a\u308a, \\(S -10\\) \u500b\u306e\u3007\u3068 \\(2\\) \u672c\u306e\uff5c\u3092\u4e26\u3079\u308b\u65b9\u6cd5\u3092\u8003\u3048\u308c\u3070\u3088\u3044\u306e\u3067\r\n\\[\\begin{align}\r\n& 2 \\left( {} _ {2} \\text{C}{} _ {2} +{} _ {3} \\text{C}{} _ {2} +{} _ {4} \\text{C}{} _ {2} +{} _ {5} \\text{C}{} _ {2} +{} _ {6} \\text{C}{} _ {2} \\right) \\\\\r\n& \\quad = 2 ( 1 +3 +6 +10 +15 ) = 70 \\ \\text{\u901a\u308a}\r\n\\end{align}\\]<\/li>\r\n<li><p><strong>3*<\/strong>\u3000\\(U = 3\\) \u306e\u3068\u304d<br \/>\r\n\\(5+5+5 = 15 \\leqq S \\leqq 27 = 9+9+9\\) \u306a\u306e\u3067, \\(R = 2 , 3\\) .<br \/>\r\n\u3086\u3048\u306b [2] \u304c\u6210\u7acb\u3059\u308b\u306e\u306f\r\n\\[\r\n15 \\leqq S \\leqq 24\r\n\\]\r\n<strong>(2)<\/strong> \u306e\u7d4c\u904e\u3092\u7528\u3044\u308c\u3070, \u3053\u308c\u3092\u307f\u305f\u3059 \\(a_1\\) \uff5e \\(a_3\\) \u306e\u9078\u3073\u65b9\u306f\r\n\\[\r\n5^3 -10 = 115 \\ \\text{\u901a\u308a}\r\n\\]<\/li>\r\n<\/ol>\r\n<p>\u4ee5\u4e0a\u3088\u308a, \u6c42\u3081\u308b\u78ba\u7387\u306f\r\n\\[\\begin{align}\r\n\\dfrac{70 +115}{1000} = \\underline{\\dfrac{37}{200}}\r\n\\end{align}\\]\r\n","protected":false},"excerpt":{"rendered":"\\(0\\) \u304b\u3089 \\(9\\) \u307e\u3067\u306e\u76f8\u7570\u306a\u308b\u6574\u6570\u304c \\(1\\) \u3064\u305a\u3064\u66f8\u304b\u308c\u305f \\(10\\) \u500b\u306e\u7403\u304c, \u888b\u306e\u4e2d\u306b\u5165\u3063\u3066\u3044\u308b. \u3053\u306e\u888b\u304b\u3089\u7403\u3092\u7121\u4f5c\u70ba\u306b \\(1\\) \u500b\u53d6\u308a\u51fa\u3057\u3066\u306f\u3082\u3068\u306b\u3082\u3069\u3059\u64cd\u4f5c\u3092 \\(3\\) \u56de\u7e70\u308a\u8fd4\u3057 &hellip; <a href=\"https:\/\/www.roundown.net\/nyushi\/iks202101\/\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[174],"tags":[145,165],"class_list":["post-2003","post","type-post","status-publish","format-standard","hentry","category-ikashika_2021","tag-ikashika","tag-165"],"_links":{"self":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/2003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/comments?post=2003"}],"version-history":[{"count":0,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/2003\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/media?parent=2003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/categories?post=2003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/tags?post=2003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}