This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

Two bullocks, 1 ram, and 7 lambs

Numbers 28:11 View context

And in the beginnings of your months ye shall offer a burnt offering unto the LORD; two young bullocks, and one ram, seven lambs of the first year without spot;

One bullock, 1 ram, and 6 lambs

Ezekiel 46:6 View context

And in the day of the new moon [it shall be] a young bullock without blemish, and six lambs, and a ram: they shall be without blemish.