How are illusions are related o math?

How do you write 4321 in form? What percent of 21 is 9 rounded to the nearest whole number? Convert 20000 gallons of LNG into pounds? How many people in America get cancer each year? What would one likely find in an ecosystem that has remained relatively unchanged for hundreds to thousands of years? How many exams are needed if 70 percent of patients pay 80 dollars an exam while 30 percent pay 100 dollars an exam to equal 210000 dollars? What is the tree factor of 976? How lines of symmetry does a slanted rectangle have? Is ray AB always the same as ray BA? What is the inverse of a function? If both pairs of opposite sides of a quadrilateral are congruent then the quadrilateral is a parallelogram.? What are the dimensions of a photo that is 700k? In a system of nonlinear inequalities the solution set is the region where shaded regions? What the decimal of 91 over 99? How many positive integers with exactly three decimal digit positive integers between 100 and 999 inclusive divisible by 7? Solving for X what is 10 multiplied by X plus 4 equals 3 multiplied by X plus 9? How do you round 009999991 to 1 significant figure? What is 2793000000 written in scientific notation? What does xi xxvii mmvii mean? How do you show your work for a division problem?

How are illusions are related o math?