Seven is the one selection D for which the equation 2n − D = x2 has much more than two answers for n and x all-natural. Specifically, the equation 2n − seven = x2 is called the Ramanujan–Nagell equation. In the future a monk came by. They invited him to https://angeloogxlz.tokka-blog.com/38199277/7-day-pill-organizers-things-to-know-before-you-buy