What is the LCM of 11 7 and 175?

Answer 1

1925

Just grab a calculator and try 11*175 (cause they're the largest): 1925. Try dividing by 7 and it works out. So, now you know you only have to try 175 times 1 then times 2 then times 3 up to times 11 (which with a calculator only takes a couple of minutes) and try dividing each of those by 11, if it works try by 7. In this case, none work for 11 until you get to 1925 so that's your answer.