Answer:
Expected date of birth will be 17 march
Explanation:
We have given last menstrual period started on June 10
We have to find the expected date of birth
According to Nägele's rule expected birth will be subtracting 3 month from last menstrual period and add 7 days
So after subtracting 3 month from last menstrual period it will be 10 march
And after adding 7 days it will become 17 march
So expected date of birth will be 17 march