<p>Double or dual-major Math with CS is good because of what was stated. There are less strictly-mathematical jobs out there and have CS “in your back pocket” can fill in when the purely-math opportunities do not unfold.</p>
<p>I have done 12-16 month projects that were more of the systems engineering, modeling, mathematical aspect. Once the project was over, maybe there was no new math-like job over the horizon, so I was always able to tell my employer to put me back on a software engineering project.</p>