What is prime nubers well defined or not?

How many births every 8 seconds? What is the sum of the measures of the interior angles in the regular heptagon? A slow lyrical intimate composition for piano associated with evening and night time is the? What is the shape of a kite? How do you write 4.7 million dollars? If two approaching vehicles are traveling at mph each then their closing speed is? If daryl ran 3 miles every other day in August and 3.5 miles every other day in September how much will he run each day in october? Why are pyramids isosceles triangles? How do you calculate area of cylinder in taper shape? What number goes into 56 and 49? If using numbers 0 through 9 how many different 2 digit combinations can be made? What is the width of Britain in miles? Is 0.21 a rational number? Beth has 400 roses 48 of them are yellow what percentage of the roses are yellow? What is the area of a circle if the diameter is 1 cm? What is the code on the paper in mission 7 on The 39 Clues? What does a septagon look like? How long is 154cm in feet and inches? Give you a sentence using ratio? Did any event happen when simon stevin was alive?