Solved papers for JEE Main & Advanced JEE Main Paper (Held On 11 April 2015)
done JEE Main Paper (Held On 11 April 2015) Total Questions - 2
question_answer1) 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\[f:A\to B\] that are onto, if there exist exactly three elements x in A such that\[f(x)={{y}_{2}},\] is equal to :
[JEE Main Online Paper (Held On 11 April 2015)]
question_answer2) If in a regular polygon the number of diagonals is 54, then the number of sides of this polygon is :
[JEE Main Online Paper (Held On 11 April 2015)]