@walter_rocco@SqSehrish Wrong.
0! = 1
This is a standard mathematical definition. The factorial n! is the product of all positive integers from 1 to n. For n = 0, there are no terms to multiply, so it is the empty product, which is defined to be 1.
@Pinoy_hakdog@SqSehrish 0! = 1
This is a standard mathematical definition. The factorial n! is the product of all positive integers from 1 to n. For n = 0, there are no terms to multiply, so it is the empty product, which is defined to be 1.
@JKalogeros@SqSehrish It’s not zero. 0! = 1
This is a standard mathematical definition. The factorial n! is the product of all positive integers from 1 to n. For n = 0, there are no terms to multiply, so it is the empty product, which is defined to be 1.
No, state laws generally cannot restrict or regulate the official activities of federal officers when those officers are acting within the scope of their federal duties. This stems from the Supremacy Clause (U.S. Constitution, Article VI, Clause 2), which establishes that the Constitution, federal laws, and treaties are “the supreme Law of the Land,” binding on state judges and overriding conflicting state laws. 
States lack authority to impede, burden, or control the execution of federal law. Allowing them to do so would undermine the federal government’s ability to operate uniformly across the country. Federal officers (e.g., FBI agents, ICE officers, U.S. Marshals, or DEA agents) derive their authority from federal statutes and the Constitution, not state permission.