Suppose a couple will continue having children until they have at least two children of each sex (two boys and two girls). how many children might they expect to have?

after 4 children, there is 37.5% chance you have 2 boys/2 girls

 after 5 children, there is 62.5% chance you have at least 2boys/2 girls 

after 6 children, there is 78% chance you have at least 2boys/2 girls 

after 8 children, there is 93% chance you have at least 2boys/2 girls ... 

based on this i would say a reasonable expectation would be about 6 children

I hope this answer helped you somehow.

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

a. turk and mcalister

b. howard, mission, and market

c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th

step-by-step explanation:

parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.

intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.

skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.