<p>Likability, intuition, and a strong work ethic is a potent combination in any business, and many in Silicon Valley think seed-stage investors Pejman Nozad and Mar Hershenson have all three in spades. They&nbsp;&ldquo;complement each other,&rdquo;&nbsp;says investor Alfred Lin of Sequoia Capital, who invested in&nbsp;the Series A round of&nbsp;DoorDash,&nbsp;the restaurant delivery company,&nbsp;after they seeded it.</p>