Could somebody help me with this problem? Thanks
1 + 2 + 3 + 4 + ... + 10 = 55
Let the number she didn't include be called x.
55 - x = a square number.
x has to be in the interval [1, 10]
The largest square number less than 55 is 49.
55 - x = 49
x = 6
I hope this helped. :))
=^._.^=
