How many unique ways are there to arrange the letters in the world that?

If 20% of a number is 35, what is 50% of that number?

Which graph corresponds to the function f(x) = x2 + 4x – 1?

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?