(Q). In the annual function of a school every student gave a gift to every other student. If total number of gift distributed is 380 then(i). How many students were present in the function?(ii). How many gifts received by a particular student Amit ?Solution:-Let there...
(Q). A committee of 5 men & 5 women is to be selected from 9 men & 10 women. (i). In how many ways this can be done (ii). In how many ways this can be done if a particular woman is always selected (iii). In how many ways this can be done if a particular woman...
(Q). 30 players from India, Canada & Russia participatedd in world chess tournament. Number of players from india is 3 more than the number of players from canada. In tournament players from same country are not allowed to play against each other & no two...
(Q). In a certain test, 2⁽ᵏ⁻ᶦ⁾ students gave wrong answers to at least i questions, where i = 1, 2, 3, ………., k & no student gave more than k wrong answers. what is the total number of wrong answers given?Solution:- From previous questiontotal...
(Q). In a certain test, aᵢ students gave wrong answer to at least i question where i = 1, 2, 3, ………, k & no student gave more than k wrong answers. What is the total number of wrong answers?Solution:- Number of students who gave i or more than i...
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