The arrow-keys tag seems fairly ambiguous. Arrow keys don't strike me as something that can explicitly be a problem (and if they are, it's probably better for Super User). Glancing through the first couple of questions seems to suggest that it doesn't really add anything meaningful to the questio...

Should be moved to the right a bit.

Just look at "Be on-topic" in "How do I ask a good question?": Our community is defined by a specific set of topics that you can view in the help center... Great; nothing wrong there. please stick to those topics and avoid asking for opinions or open-ended discussion. Wut.... hey, we'...

I have to check if there is any way where I can check if the number of nodes in a given binary tree is odd or not. The function gets one int parameter: //BinaryTree: public boolean oddNodes(){ if(root==null) return false; else return root.oddNodes(1); //already has one - at least } //...

You need to add "}" to the end of your code.

Just look at this list on SO, this list on MSE, this list on M&TV, this list on UX, etc. In short all the sites which had a recent redesign or relatively recently graduated sites with those new SVGifyied designs... Before all those redesigns, the answers with score of <-3 on normal (main) sites ...

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If one blows up $\mathbb P^2$ twice and blows down once, then he may get $\mathbb P \times \mathbb P$. I am wondering if the same thing can be done for $\mathbb P^3$ and $\mathbb P \times \mathbb P \times \mathbb P$. In this case, the blow-up centers can be points and smooth curves and blow-ups...

Can $\mathbb P \times \mathbb P \times \mathbb P$ be obtained from $\mathbb P^3$ by a finite succession of blow-ups and blow-downs along non-singular centers?

Can $\mathbb P \times \mathbb P \times \mathbb P$ be obtained from $\mathbb P^3$ by a finite succession of blow-ups and blow-downs along non-singular centers?

If one blows up $\mathbb P^2$ twice and blows down once, then he may get $\mathbb P \times \mathbb P$. I am wondering if the same thing can be done for $\mathbb P^3$ and $\mathbb P \times \mathbb P \times \mathbb P$. In this case, the blow-up centers can be points and smooth curves and blow-ups...

In the community-hider, this phrase: New sites that you join will be linked to your other communities by default. might confuse users. It seems that be "other" you mean "visible", could it be stated more clearly?