Question

at a birthday party, each child gives a gift to the rest.there were 342 gifts distributed at the party. Find the no. of children at the party

Answer 1

Answer:

Let there are N children,then each of them will give (N-1) gifts,(each children 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 children can not be negative,

so number of children =12

Step-by-step explanation:

please mark me as a brainliest

Answer 2

Answer:

Let there are N children,then each of them will give (N-1) gifts,(each children 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 children can not be negative,

so number of children =12

PLZ FOLLOW ME