# Plz solve this question.

Please find below the answer:

In the given condition a color-blind man marries a normal woman with no history of colorblindness in her family. But it is not specified whether the grandsons are through Daughter or Sons. Thus, we need to consider the following cases:

1) If all the grandsons are both through son and daughter then the probability comes out to be one out of four i.e, 1/4 = 0.25.

2) If we consider the grandsons only through daughter, then the solution will be 0.5.

3) If we consider the grandsons only through son, then the solution will be nil.

Hope this information clears your doubt.

Regards.

**
**