Question

Let X1andX2 be two random variables with a joint distribution function given as f(x1,x2)={kx1x2ifx1=1,2,3andx2=1,2,30,otherwise Determine the value of k that would make the function f(x1,x2) a joint probability mass function

Answer 1

Answer:

I think this is hypothetical question I am unable to answer sorry for that