Answer:
Direct all customer questions to Microsoft's Customer Support.
Well the website that is trying to tell you the answer is usually the problem. Only websites with .org or .gov are usually reliable because they are run by governments institutes. Websites with the tag .com probably will not be reliable because anyone can make a website today and we don't know if those people are reliable or not.
Answer:
ok, this isnt hard but it takes long
Explanation:
The least common multiple (LCM) of 78, 90, and 140 is: 16,380
78 × 210 = 16,380
90 × 182 = 16,380
140 × 117 = 16,380