Seven is the only real quantity D for which the equation 2n − D = x2 has a lot more than two solutions for n and x natural. Specifically, the equation 2n − 7 = x2 is known as the Ramanujan–Nagell equation. Polynices was among the 7 commanders. After Significantly https://augustnjbse.affiliatblogger.com/89864870/the-5-second-trick-for-7-day-pill-organizers