Question 880201
sqrt(132)=11.48
We want two integers close to 11.48 that differ by one and multiply to 132
a-b=1
a=1+b
a*b=132
(1+b)*b=132
b^2+b=132
b^2+b-132=0


Since a gift from a to b is not the same as a gift from b to a
Each of 12 people give gifts to the 11 others.
12*11=132