I recently heard that someone we know got a government job by paying a huge bribe. It got me wondering if it's true and if so how common is this? How does this happen even for posts that require clearing competitive exams annd interviews and being on the merit list?

I recently heard that someone we know got a government job by paying a huge bribe. It got me wondering if it's true and if so how common is this? How does this happen even for posts that require clearing competitive exams annd interviews and being on the merit list?