Recent content by vecsen

Thank you, and thanks for your patience. Now I understand the question & the suggestion that unless 50% is removed... Grateful. Regards, v.

thanks for the time & answer. However, you mention "the next stage removes 1/n of the amount of impurity removed in the preceding stage" . I beg to differ: to my mind stage k removes 1/n of the amount REMAINING dissolved in the medium. The way I think of it, you are pointing to (1/n^k), while I...

thanks, I totally messed this one up. regards, v.

a hearty thanks for the welcome--and your time. GB

Homework Statement The question is : "In a water purification process, one-nth of the impurity is removed in the first stage. In each succeeding stage, the amount of impurity removed is one-nth of that removed in the preceding stage. Show that if n = 2, the water can be made as pure as you...

Greetings, & sorry about the title (referring to my 1st post) following on initial misuse of this space, this is only to say hello, & that you would never be interested in what I am doing--next to nothing, an old hack meddling with some maths.