Fatima says that she has a mass of 45 grams, but she used the wrong unit of measurement. what is fatima’s actual mass?

45 kg. She can't be 45 g really is she that light??
Therefore its kg not g.

I’m not absolutely sure but i think it’s 7x6x5x4x3x2=5040 because as the first character you can take any of the 7 given then you are left with 5 then 6 then 4 etc.