Question 27
Is it possible for positive integers $a,d$ to satisfy each of the following equalities?
- **(a)** $[a,a+d]=[a,a+2d]$.
- **(b)** $[a,a+d]=[a,a+4d]$.
Here $[x,y]$ denotes the least common multiple of the integers $x,y$.
- **(a)** $[a,a+d]=[a,a+2d]$.
- **(b)** $[a,a+d]=[a,a+4d]$.
Here $[x,y]$ denotes the least common multiple of the integers $x,y$.