An AB2 salt has a solubility of 267 mmol/100g. Assuming that 1 L of solution weighs 1 kg.
Compute solubility product Ksp.
Please see the attached file.
Computing the Ksp
You have an AB2 salt with a solubility of 267 mmol/100g. ...
It provides an example of computing solubility product Ksp given the solubility of the salt AB2.