What is the verb form of difficulty?

When 7 is divided by 3 what is the remainder? What is 0.29375 rounded to the nearest cent? What is 9.46 trillion kilometers equal to? What is the probability of 2 coins having H and T? What is the furthest place away from Dublin that you could get to on a plane in less than ten hours? How did the Romans react to Christianity? How much is 72 feet in square feet? What is price of 1 dozen eggs in NC in 2018? Is 15.56 a rational number? What is a symbol called that looks like a star? Does simplyify mean to subtract? How would you measure the mass sugar? What is the factor for the trinomial 5x square plus 11x plus 2? When was Vi vet inte vart vi ska men vi ska komma dit created? What has a diagnal line of symmetry? How many yards in 50 cubits? What is a 30-Second anti-shock mechanism? Find the 20 percent of 850? What percent of 80 is 128? Whats the difference between a linear equation and a system of linear equations?