Math Help - dice

1. dice

A die is loaded so that Pr(x=k) is (a)(k) for some constant "a" where x = the number rolled. Calculate the value of "a" as a fraction in lowest terms and Pr(x<=k) for each k = 1,2,3,4,5,6.

2. Originally Posted by mhitch03
A die is loaded so that Pr(x=k) is (a)(k) for some constant "a" where x = the number rolled. Calculate the value of "a" as a fraction in lowest terms and Pr(x<=k) for each k = 1,2,3,4,5,6.
Use the fact that the sum of the probabilities is equal to 1. If you need more help, please post what you've done and say where you get stuck.