0 votes 0 votes Let $x=\sqrt{4+\sqrt{4-\sqrt{4+\sqrt{4-}}}} \dots$ to infinity. Then $x$ equals $3$ $\frac{\sqrt{13} -1}{2}$ $\frac{\sqrt{13} +1}{2}$ $\sqrt{13}$ Quantitative Aptitude cat2005 quantitative-aptitude algebra + – go_editor asked Dec 29, 2015 • edited Mar 29, 2022 by Lakshman Bhaiya go_editor 13.8k points 594 views answer comment Share See all 0 reply Please log in or register to add a comment.