maths

this week we are learning if we are using 10 numbers to make 37
by using 7,3,1,5 but then we figured that they are all odds and 37 is
a odd number then we did odd+odd=even like to make 16 you can use
4 number at total and they were 5,3,1 they are odd and 5+5+3+3=16
so 4 odds =a even