What does opposite quantities mean?

What weighs more 1 lb of bricks or 1lb of feathers or 1lb of cheese? What is the volume of 100 centimeter cubes? What is the number 8009673 in word form? How do you draw a quadrilateral that has no square coners? What types of tests are there to measure intelligence? What are the prime numbers between 1 and 1500? Is overdosing on sleeping pills like Lunesta or Ambien a very reliable and effective way to commit suicide? What happen at the metric convention in 1875? What is the difference between parametric and non parametric? What is 25 over 26 as a decimal? What statement is true for all visual distress signals? Is 19 to -19? What is the fraction of 5 friends sharing 2 boxes of trail mix? What is the volume of a rectangular prism with a length of 3 feet a height of 2 feet and width of 7 feet? How long does it take the minute hand to move to 6 degrees? What triangle has all sides and angles congurent? What is a real word problem which you would need to find the number of units between -6 and 0 on a number line? What year did Moses lead the people from Egypt? How would someone age if they were born on a leap year? What is the LCM of 20 and 25 and 20?