Do we give or take exam ? Please clarify the difference of both.  In normal english, if we give something then it is giving, then it will b giving exam. But everyone says "giving exam" is wrong.
Amongst North Indian Students, the phrase "give an exam" is very popular. These students use the phrase to describe the act of writing the answers to examination questions.  The reason being, in Hindi, it's known as "exam dhena" which translates literally to "to give an exam".  In South India, however, a majority of people use the phrase "to take up an exam".  Which of these usages is more common/appropriate/grammatical? (As a prof I have developed a strange aversion toward the "give an exam" phrase; I find it wrong and ugly.)
C# Mono - Low Level Keyboard Hook I'm using code that I found on the .  The only problem is it uses external DLL calls that don't work in mono.  I was wondering if anyone knew of a way to accomplish the same thing as that code, but will run in both Windows using .net, and Linux using mono?  Edit:  Clarifying what I'm trying to do: I'm making a .  The program sits in the system tray and when the user presses the hot-key, it will pop up all the gadgets.  So the program doesn't have focus, so typically it won't catch any keystrokes, so I'm using the low-level keyboard hook and I hook the two keys that the user defines as the hot-keys.  But I'm using a Windows DLL call for that, which doesn't work in Linux using mono.  So I'm wondering if there's a way to do the same thing, but will run in Linux using mono? After hitting 80% LTV, my mortgage lender refuses to remove PMI. Any recourse? I recently refinanced my home. At the time based on the appraisal vs. amortization I found I would be stuck with PMI (private mortgage insurance) for about 9 months.  I've paid extra on the mortgage each month and after 7 months I got my LTV (loan-to-value ratio) to be 79%. Yay! So I called Pacific Union and asked for PMI to be removed.  The woman said I'd need to fax in a written request. Then she added that my written request would likely be denied because my account had not been in good standing the last 12 months. I pointed out that I'd only had the loan for 7 months and had never been late, but that didn't seem to matter to her.  So I faxed in my written request. Then I read through all my documentation on my loan. Nowhere did it say that I needed to have the loan for 12 months.  After a week I called them back and they said it would be another week for a decision.  So, I waited another week and called. They now just had a recording saying they were too busy to take a call and I could leave a callback number. I did this and never heard back. I've now tried twice more to call them. Each time I leave a number and each time I don't hear back. So I've fired off a written request again.  At this point we've gone around the horn to the next month and in two short days I'll be paying PMI on March's payment.  Do they have any grounds to not remove PMI? Isn't it federally mandated that PMI must be removed at 80%? Any recourse anyone can think of?  [EDIT] - I heard back from Pacific Union. They state that I did not sign anything agreeing to these terms which is what I was certain of. They state these terms are simply automatic with Fannie Mai backed loans and it doesn't matter if I was informed or not about these terms. They also chose not to hide behind the "no late payments" clause and instead said they were requiring an appraisal to remove PMI. Of course an appraisal is $400 and I'll hit 78% LTV before I would pay that much extra in PMI. I have now contacted a lawyer. I'll update again with whatever opinion the lawyer has and whether I proceed or not.  [EDIT] - I filed a BBB complaint. They waited 30+ days to respond. In their response they indicate that the first woman (and some SE users below) are wrong. The loan does NOT have to be in good standing for 12 months. The loan simply needs no late payments within 12 months. They then hide behind the request for another appraisal as the sole reason to not remove it. I checked with Fannie Mae who backs the loan and was told this is optional per the lender, however the lender can force it and I have no recourse. Additionally, they could have asked for a Broker's Price Option (BPO) or a certificate of value which would cost me hundreds less.   At this point I cannot continue to fight them because the amount of PMI I'll pay until 78% LTV is equal to or less than the appraisal cost of $400.  [EDIT] As of August 2015 I've hit 78% LTV. I called Pacific Union to ensure that the automatic cancellation of PMI had happened. They said no, I'd need to request that in writing. This is a violation of federal law as it's supposed to be automatic. They also said they would still deny it because now they want 24 months of good history. I've sent a threatening letter off and am waiting for a reply. If any lawyers come along and read this I'd sure like to hire you.  [EDIT] After my letter they said they would remove PMI. They did not and I was charged again in September. I called them yet again and complained. They said PMI was going to be removed. They then charged my again in October! I called again. I called again and went berserk on the phone. PMI was finally removed for November 2015. First month without it. Why is the product of all units of a finite field equal to $-1$? Suppose $F=\{0,a_1,\dots,a_{q-1}\}$ is a finite field with $q=p^n$ elements. I'm curious, why is the product of all elements of $F^\ast$ equal to $-1$? I know that $F^\ast$ is cyclic, say generated by $a$. Then the product in question can be written as  $$ a_1\cdots a_{q-1}=1\cdot a\cdot a^2\cdots a^{q-2}=a^{(q-2)(q-1)/2}. $$ However, I'm having trouble jumping from that product to $-1$. What is the key observation to make here? Thanks! Is there anything special with complex fraction $\left|\frac{z-a}{1-\bar{a}{z}}\right|$? Butterknife appears twice in the OSS attribution list of the Android app (v1.0.85). Based on the links, the second one should be JMustache. How to add CC to a webform email? I'm using Drupal 7.  Is it possible to add a CC to a webform email?  I was using   function theme_webform_mail_headers($variables) {   $headers = array(     'X-Mailer' =&gt; 'Drupal Webform (PHP/' . phpversion() . ')',   );   return $headers; }   changing it with      function MYTHEME_webform_mail_headers($variables) {       $headers = array( 'CC' =&gt; 'ccmeail@domain.com', 'X-Mailer' =&gt; 'Drupal Webform (PHP/'. phpversion() .')',  );       return $headers;     }   It does not work, I've cleared all the chaches and it does not add the CC. How could I add the CC?  Thanks in advance. What invisible flicker do different types of light bulbs have? How does "virus been detected" on android pop up on chrome when visiting some sites? What is the cause of this chrome bug on android? The last site I went to was www.destructoid.com and all of a sudden it gets redirected to the following url. This happened previously awhile back, but I didn't document everything as I did today. I'm also on android chrome canary if that matters.   I took some screenshots before closing out of that tab. But my question is:   What chrome bug or malware is causing these random redirects? How can one detect if they have this vulnerability?   The url is: How do I access my Windows partition? I have enabled storing Desktop &amp; Document Folders in iCloud. I keep my Xcode projects on Desktop. Every hour or so, iCloud will store files, inside of Pods folder present alongside the Xcode Project in iCloud. This is very tedious as I then have to click on each one of them one-by-one to re-download.  How can I prevent iCloud from downloading my files in this manner, for this specific Xcode project?  I have tried disabling iCloud for Desktop, but this results in me losing all my Desktop folders/files, so I could rather not go this route. How can I find the unit vector of a three dimensional vector? For example, I have a problem that I am working on that tells me that I have a vector $\hat{r}$ that is a unit vector, and I am told to prove this fact:     $\hat{r} = \frac{2}{3}\hat{i} - \frac{1}{3}\hat{j} - \frac{2}{3}\hat{k}$   I know that with a two-dimension unit vector that you can split it up into components, treat it as a right-triangle, and find the hypotenuse. Following that idea, I tried something like this, where I found the magnitude of the vectors $\hat{i}$ and $\hat{j}$, then using that vector, found the magnitude between ${\hat{v}}_{ij}$ and $\hat{k}$:     $\left|\hat{r}\right| = \sqrt{\sqrt{{\left(\frac{2}{3}\right)}^{2} + {\left(\frac{-1}{3}\right)}^{2}} + {\left(\frac{-2}{3}\right)}^{2}}$   However, this does not prove that I was working with a unit vector, as the answer did not evaluate to one. How can I find the unit vector of a three-dimensional vector?  Thank you for your time. Are there any differences between insmod and modprobe? Where are temporary files in Chrome stored? If $\lim_{x \to +\infty} f'(x) = L$, then $\lim_{x \to \infty} \frac {f(x)}{x} = L$ I'm trying to solve this question:     Let $f:[0,+\infty) \to \mathbb{R}$ be derivable and $\lim_{x \to +\infty} f'(x) = L$, then $\lim_{x\to \infty}\frac {f(x)}{x}=L$.   I'm trying to solve this question using l'Hôpital rule, but I couldn't use it, because I don't know if $\lim_{x\to +\infty} f(x)=+\infty$.  I need help.  Thanks a lot. Number of non decreasing sequences of length $M$ How many non decreasing sequences are there of length $M$, provided the number in the sequences are allowed from $1,2,3,...,N$? Is leaving airport at a stop before the final destination illegal? There are tricks such as  or  which involve booking a ticket composed of several connecting flights, then leaving the airport at a stop, possibly even "hopping off" a plane (intermediate landing). Rationale: Sometimes these tickets are cheaper than a ticket to one of the stops. So one adds an additional leg and discards it.  Some people say that when using such tricks, one enters a legal gray area. But I wonder:  Could leaving the airport at a stop really be illegal, i.e. violating an airline's or a travel agency's terms?  Also there are suggestions that one should not request an upgrade, because then the trick may be discovered by the airline. Here I wonder:  How can they know that one will throw away the last leg? Do we really need polynomials (In contrast to polynomial functions)? How to find the smallest $n$ such that $n^a\equiv 1 \pmod p$ Test of whole distribution for two samples Alert on edit after a downvote I wonder if it would be possible to extend the current notification system.   Namely, if I downvote a question and that thing had an edit, I'd be happy to see that in my inbox. As possibly the cause for downvote was cleaned up and it should be undone.