Solution:

Of course, it is impossible. Into the second room should have gone the 2nd guest, because the 13th guest was waiting in room number 1

Solution:

Both would be the same distance from City owlna. (since they are at a same point)

Solution:

Simply push the cork into the bottle and shake the marble out.

Solution:

Kristen Stewart is the youngest

Solution:

99+9/9 = 100

Solution:

Take a bottle of drinks from the "whiskey and coke bottles" box.

If there is a whiskey bottles then you know that is the "whiskey bottles" box since ALL THE boxes are labeled incorrectly.

This means the box marked "whiskey bottles" must be "coke bottles" and the box marked "coke bottles" must be "whiskey and coke bottles".

Solution:

They are the same houses that you saw on the opposite direction while coming back home. Thus there are fourteen houses between your home and the grocery store.

Solution:

Amelia --> vanilla-shake
Charlotte --> chocolate-shake
Evelyn --> strawberry-shake
Anna --> burger
Ella --> curd

Solution:

Nine (eight sons have same one sister ,so 8+1=9)

Solution:

4 socks

Although there are many socks in the draw, there are only three colors. So, four socks are enough to match one pair.