II. Permutation<\/span> \nA permutation is the arrangement of some or all of a number of different objects.<\/p>\nFactorial notation: The notation n! represents the product of first n natural numbers, \nie; n! = n(n – 1 )(n – 2) ….. 3.2.1 \n1. 1! = 1 \n2. 0! = 1<\/p>\n
The number of permutation of \u2018n\u2019 different objects taken ‘r’ at a time, where the objects do not repeat is n(n – 1)(n – 2)……(n – r + 1) which is denoted by n<\/sup>Pr<\/sub>. \n \nThe number of permutation of \u2018n\u2019 different objects taken ‘r’ at a time, where repetition is allowed is nr<\/sup>.<\/p>\nPermutation when all the objects are not distinct. \n1. The number of permutations of \u2018n\u2019 objects, where \u2018p\u2019 objects are of the same kind and rest all different = \\(\\frac{n !}{p !}\\)<\/p>\n
2. The number of permutations of ‘n’ objects, where \u2018p1\u2019 objects are of one kind, \u2018p2\u2019 objects are of the second kind, …….., ‘pk<\/sub>‘ objects are of a kth kind and rest all different = \\(\\frac{n !}{p_{1} ! p_{2} ! \\ldots p_{k} !}\\)<\/p>\nIII. Combinations<\/span> \nA combination is a selection of some or all of a number of different objects (the order of selection is not important). The number of selection of ‘n’ things taken ‘r’ at a time is n<\/sup>Cr<\/sub>. \n <\/p>\nWe hope the Plus One Maths Notes Chapter 7 Permutation and Combinations help you. If you have any query regarding Kerala Plus One Maths Notes Chapter 7 Permutation and Combinations, drop a comment below and we will get back to you at the earliest.<\/p>\n","protected":false},"excerpt":{"rendered":"
Plus One Maths Notes Chapter 7 Permutation and Combinations is part of Plus One Maths Notes. Here we have given Kerala Plus One Maths Notes Chapter 7 Permutation and Combinations. Board SCERT, Kerala Text Book NCERT Based Class Plus One Subject Maths Notes Chapter Chapter 7 Chapter Name Permutation and Combinations Category Plus\u00a0One Kerala Kerala […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[42728],"tags":[],"yoast_head":"\n
Plus One Maths Notes Chapter 7 Permutation and Combinations - A Plus Topper<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n