Let A=\{x_1,x_2,..,x_7\} and B=\{y_1,y_2,y_3\} be two sets containing seven and three distinct elements respectively. Then the total number of functions f:A\toB that are onto, if there exist exactly three elements x in A such that f(x)=y_2, is equal to: [Main 11 Apr 2015]

JEE Main 11 April 2015 Paper

Section: Mathematics

Question : 61 of 90

Marks: +1, -0

Let A={x1,x2,..,x7} and B={y1,y2,y3} be two sets containing seven and three distinct elements respectively. Then the total number of functions f:A→B that are onto, if there exist exactly three elements x in A such that f(x)=y2, is equal to:

[Main 11 Apr 2015]

14.7C2
16.7C3
12.7C2
14.7C3

Validate

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