Question

5. Let A = {x1, X...,x;} and B = {y, y2, y3} be two sets containing seven and three distinct
elements respectively
. Then total number of functions f: A toB that are onto, if there exist
exactly three elements x in A such that f(x) = y, is equal to
[JEE MAIN 15)

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Answer 1

Answer:

x1,x2 ,x3 +y1,y2,y3,::::::::::::