Explanation

Divide to convert a smaller unit to a larger unit. There are 1,000 liters in a kiloliter, so divide 5 by 1,000. \(5 \div 1,000=0.005\)

Simplify \(\frac {5}{10}\)

Simplify \(\frac{90}{105}\)

How many different passcodes can be formed from the letters {A, B, C, D} if each letter can only be used once?