Answer: 7. (Exodus 20:1-17)
Comments: The Ten commandments consist of seven negative and three positive commands. The first negative ordinance is described in the second commandment:
"You shall have no other gods before Me." (Exodus 20:3, NASB)
In the broader Mosaic law, there are 613 mitzvot ("commandments"). These are comprised of 245 positive and 365 negative directives.