What does the little v mean in maths?

What is a quadrilateral with two nonparallel sides and two parallel sides? Simplify the square root of 75? How do you write 3 as a mixed number? What is the perimeter of a rectangle 7 meters by 4 meters? How many different factors does the number 83 have? What are three improper fractions for four and 1 half? What is the cube route of -3? Simplify -23 - -32? How does technical analysis differ from the fundamental analysis? What prime numbers go into 125? What is 10inches equals how many feet? Is actual two or three syllables? How can you make 3.59 with 14 coins with no change? Are there polygons that have no parallel sides? How do you work out 4 divided by 92? What is six dollars take 25 percent? What is the answer to 2.5 multiplied by 06? What is 13 x 9? Are all supplementary angles congruent? Is -5 an integer rational whole or natural?