The this means "a trouble" is mid-15c. Mathematical feeling of "proposition demanding some operation for being executed" is from 1560s in English. Problem little one, one where difficulties of a private or social character are manifested, is recorded by 1916. Datakalab explained by itself as “authorities in reduced electricity, runtime https://plus75318.wikilowdown.com/6056011/pro_can_be_fun_for_anyone