In a company each employee gives a gift to every other employee .if the total number of gifts is 132 then the number of employee in the company is
Solution (By Examveda Team)
Let there are N employee,then each of them will give (N-1) gifts,(each employee will not gift himself)Total gifts =N*(N-1) =N^2 -N
N^2 -N =132
N^2 -N -132 =0
(N-12)(N+11) =0
N = 12 ,-11
as number of employee can not be negative,
so number of employee =12
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