Question

anyone send me this answer I am not understanding this question

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^{. In how many ways can a student choose a programme of 5 courses if 9 courses are available and 2 specific courses are compulsory for every student?} 

^{Why do 2 specific course not get added to answer 35}

Show that 2+3 root 3 is an irrational number

class 10 cbse model paper maths 2017-18.

Find the image of the point P(1,2) in the line x-3y+4=