Merging man & maths https://www.mathcity.org/ Mon, 15 Jun 2026 17:19:56 +0000 FeedCreator 1.8 https://www.mathcity.org/_media/logo.svg https://www.mathcity.org/ https://www.mathcity.org/dyk/2 What is the value of pi? What is the value of $\pi$? * (A) 3.1415 * (B) $\frac{22}{7}$ * (C) $\frac{333}{160}$ * (D) None of these ✔ Answer The number π is a mathematical constant, the ratio of a circle's circumference to its diameter. It is an irrational number, meaning that it cannot be written as the ratio of two integers or in terminating or repeated decimals.$\pi=3.14159...$$\sqrt{2}=1.4142...$$e=2.718...$$\pi$ anonymous@undisclosed.example.com (Anonymous) Sun, 07 Feb 2021 16:42:25 +0000 https://www.mathcity.org/dyk/4 Is it difficult to answer? 1−−−0.999… [Is 1=0.999...?] This is a simple and common question asked to students, who have passed higher secondary school certificate. Most of the student unable to give the correct answer. Well, we cannot predict the exact reason but one simple reason seems to be a lack of logical reasoning. For example, if we wish to round off $0.999...$$x=0.999...$$10x=9.99...$$10x=9+0.999...$$10x=9+x$$9x=9$$x=1$ anonymous@undisclosed.example.com (Anonymous) Sun, 07 Feb 2021 16:42:28 +0000