Question

A large bottle contains number medical tablets each having a mass of 250

mg.The mass of all tablets is 1kg.Calculate the number of tablets in the
bottle.​

Answer 1

First of all, this isn't physics. But, here's the answer:

1 gram is a 1000 milligram and 250 milligram is 250 * 0.001 g which is 0.25 gram.

Since 1 kg is 1000 g, we divide 1000 by 0.25 and we get 1000 * 4 which is 4000.

There are
`4000` tablets inside the bottle.