Here is the sample of the code:
TRandom3 *r = new TRandom3(0);
Double_t rho = r->Gaus(0, 0.5);
Double_t x = 0, y = 0, z = 0;
r.Sphere(x, y, z, rho);
Are Gaus() and Sphere() derived from TRandom or TRandom3 method? When I look at the TRandom3 description on page root.cern.ch/root/html520/TRandom3.html, it shows TRandom::Gaus() and TRandom::Sphere().
I am using root 5.20 version.