Question

let Pn denotes the number of wayes in which 3 people can selected out of n people sitting in row. if no two of them are consecutive .if Pn+1 - Pn =15 then the value of n?


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Answer 1

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Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.