Ok so practically speaking 1 is nto equal to 2, but theoretically it is truly possible..... Let's take some real numbers say, 1/1 = 1 1/0.1 = 10 1/0.01 = 100 1/0.001 = 1000 . . . 1/0 = ? 1/0 = infinity (actually not defined) now 0/1 is also infinity (actually not defined) Now, Let's substitute 2 in place of 1..... 2/1 = 2 2/0.1 = 20 2/0.01 = 200 2/0.001 = 2000 . . . 2/0 = ? 2/0 = infinity (actually not defined) now 0/2 is also infinity (actually not defined) Therefore, 1/0 = infinity = 2/0..... Hence, 1 should be equal to 2 but that is not possible practically because 1 pen is not equal to 2 pens.