{"id":16065,"date":"2020-09-10T17:48:07","date_gmt":"2020-09-10T12:18:07","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=16065"},"modified":"2021-07-02T15:01:52","modified_gmt":"2021-07-02T09:31:52","slug":"kseeb-solutions-for-class-7-maths-chapter-12-ex-12-4","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/kseeb-solutions-for-class-7-maths-chapter-12-ex-12-4\/","title":{"rendered":"KSEEB Solutions for Class 7 Maths Chapter 12 Algebraic Expressions Ex 12.4"},"content":{"rendered":"

Students can Download Chapter 12 Algebraic Expressions Ex 12.4, Question and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths<\/a>, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations.<\/p>\n

Karnataka State Syllabus Class 7 Maths Chapter 12 Algebraic Expressions Ex 12.4<\/h2>\n

Question 1.
\nObserve the patterns of digits made from line segments of equal length. You will find such segmented digits on the display of electronic watches or calculators.
\nIf the number of digits framed is taken to be n, the number of segments required to form n digits is given by the algebraic expression appearing on the right of each pattern.
\nHow many segments are required to form 5, 10, 100 digits of the kind 6, 4, 8.
\n\"KSEEB
\nSolution:
\ni) The number of segments required to form
\n5 digits of this kind
\n5n + 1 = 5 \u00d7 5 + 1 = 25 + 1 = 26<\/p>\n

ii) The number of segments required to form 10 digits of this kind
\n5n + 1 = 5 \u00d7 10 + 1 = 50 + 1 = 51<\/p>\n

iii) The number of segments required to form 100 digits of this kind
\n5n + 1 = 5 \u00d7 100 + 1 = 501<\/p>\n

\"KSEEB<\/p>\n

\"KSEEB
\nLet the number of digits formed be \u2018n’.
\nTherefore the number of segments required to form \u2018n\u2019 digits is given by the algebraic expression 3n + 1.
\ni) The number of segments required to form 5 digits of this kind.
\n3n + 1 = 3 \u00d7 5 + 1 = 15 + 1 = 16<\/p>\n

ii) The number of segments required to form 10 digits of this kind
\n3n + 1 = 3 \u00d7 10 + 1 = 30 + 1 = 31<\/p>\n

iii) The number of segments required to form 100 digits of this kind
\n3n + 1 = 3 \u00d7 100 + 1 = 300 + 1 = 301<\/p>\n

\"KSEEB
\nLet the number of digits formed be \u2018n\u2019. Therefore the number of segments required to form \u2018n\u2019 digits is given by the algebraic expression 5n + 2.
\ni) The number of segments required to form 5 digits of this kind.
\n5n + 2 = 5 \u00d7 5 + 2 = 25 + 2 = 27
\nii) The number of segments required to form 10 digits of this kind
\n5n + 2 = 5 \u00d7 10 + 2 = 50 + 2 = 52<\/p>\n

\"KSEEB<\/p>\n

iii) The number of segments required to form 100 digits of this kind
\n5n + 2 = 5 \u00d7 100 + 2 = 500 + 2 = 502<\/p>\n

Question 2.
\nUse the given algebraic expression to complete the table of number patterns.
\nSolution:
\n\"KSEEB<\/p>\n","protected":false},"excerpt":{"rendered":"

Students can Download Chapter 12 Algebraic Expressions Ex 12.4, Question and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations. Karnataka State Syllabus Class 7 Maths Chapter 12 Algebraic Expressions Ex 12.4 Question 1. Observe the patterns of …<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/16065"}],"collection":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/comments?post=16065"}],"version-history":[{"count":0,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/16065\/revisions"}],"wp:attachment":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/media?parent=16065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/categories?post=16065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/tags?post=16065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}