This Bible contradiction is from the Skeptic's Annotated Bible.
2 Chronicles 8:10 View context
And these [were] the chief of king Solomon's officers, [even] two hundred and fifty, that bare rule over the people.
1 Kings 9:23 View context
These [were] the chief of the officers that [were] over Solomon's work, five hundred and fifty, which bare rule over the people that wrought in the work.