The indicating "a trouble" is mid-15c. Mathematical perception of "proposition requiring some operation being performed" is from 1560s in English. Issue kid, a person by which challenges of a private or social character are manifested, is recorded by 1916. Whilst signing in, decide on Yes for the "Stay signed in?" https://pouzdro76431.total-blog.com/pro-can-be-fun-for-anyone-51845665