Why are manhole covers round?
Submitted by: AdministratorThis is a classic brainteaser, which was reportedly first asked by a Microsoft interviewer. Here's how to ""solve"" this brainteaser (remember to speak and reason out loud while solving this brainteaser): Why are manhole covers round? Could there be a structural reason? Why aren't manhole covers square? It would make it harder to fit with a cover. You'd have to rotate it exactly the right way.
The pipes below are also round, so fitting them might be easier, as might be making them. So many manhole covers are round because they don't need to be rotated. There are no corners to deal with. Also, a round manhole cover won't fall into a hole because it was rotated the wrong way, so it's safer. Looking at this, it seems corners are a problem. You can't cut yourself on a round manhole cover. And because it's round, it can be more easily transported. One person can roll it.
Submitted by: Administrator
The pipes below are also round, so fitting them might be easier, as might be making them. So many manhole covers are round because they don't need to be rotated. There are no corners to deal with. Also, a round manhole cover won't fall into a hole because it was rotated the wrong way, so it's safer. Looking at this, it seems corners are a problem. You can't cut yourself on a round manhole cover. And because it's round, it can be more easily transported. One person can roll it.
Submitted by: Administrator
Read Online Director of Research and Development Job Interview Questions And Answers
Top Director of Research and Development Questions:
☺ | Explain a time when you did not get along with your coworker? |
☺ | How do you handle your anger? |
☺ | How many basketballs would fit in this room? |
☺ | Tell me about a time when you successfully handled a situation? |
☺ | How would you estimate the weight of the Chrysler building? |
Top Government Job Categories
☺ | Government SSC Interview Questions. |
☺ | Government NDA Interview Questions. |
☺ | UPSC Political Science Interview Questions. |
☺ | Government CDS Interview Questions. |
☺ | APPSC Group I Interview Questions. |