What is 5.17490 rounded to the nearest thousandth

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

What is the least common factor of 6 and 8