Melanie and Kate went to the fruit store and there were 50 apples on the shelves.Kate's mom wanted 5 apples to make a dessert,but Melanie wanted 10 to put in her lunch for the week.If each of them bought their apples how many would be left on the shelves?

 
How many times will it take to get to 1000 by 2’s?

 
How many digits are in the number 37 ?