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## 381654729 : An Interesting Number Happened To Me Today

You might be thinking why am I writing about an individual number? Actually, in previous year annual exams, my registration number was 381654729. Which is just an ‘ordinary’ 9-digit long number. I never cared about it- and forgot it after exam results were announced. But today morning, when I opened “Mathematics Today” magazine’s October 2010, page 8; I was brilliantly…

## I am not the Ghost Hunter.

I am mohan kattimani. I lived navi-mumbai. sanpada yesterday i join in ppi course and i submitted in course fees 40,000 (21-8-2014)and my scan copy. i let he no when i started  in this course.i like work in grip team. i hope future we work in together ghost hunting. my cell no {redacted}. please sir when you have time reply…

## Smart Fallacies: i=1, 1= 2 and 1= 3

This mathematical fallacy is due to a simple assumption, that $-1=\dfrac{-1}{1}=\dfrac{1}{-1}$ . Proceeding with $\dfrac{-1}{1}=\dfrac{1}{-1}$ and taking square-roots of both sides, we get: $\dfrac{\sqrt{-1}}{\sqrt{1}}=\dfrac{\sqrt{1}}{\sqrt{-1}}$ Now, as the Euler’s constant $i= \sqrt{-1}$ and $\sqrt{1}=1$ , we can have $\dfrac{i}{1}=\dfrac{1}{i} \ldots \{1 \}$ $\Rightarrow i^2=1 \ldots \{2 \}$ . This is complete contradiction to the…

## Photo Archives from ‘Only Gaurav’

‘Only Gaurav‘ was a photo-blog, I operated parallel to MY DIGITAL NOTEBOOK. Both sites worked well together until February 2012. After February 2012, I got busy in college stuffs and my blogging life took a huge leap of one year. MY DIGITAL NOTEBOOK was able to survive this gap and now it is continuously getting updated. On the other hand,…

## A Yes No Puzzle

This is not just math, but a very good test for linguistic reasoning. If you are serious about this test and think that you’ve a sharp [at least average] brain then read the statement (only) below –summarize it –find the conclusion and then answer that whether summary of the statement is Yes or No. [And if you’re not serious about…