Math Practice- percentages,nPr, nCr, and more…
1. How many integers between 0 and 999 contain a single digit that is a 7? 2. The probability of scoring 90 or above is .35 in a group of 11 students, find the probability that 10 or 11 score a 90 or above? 3. Staples now sells their own notebooks. Making notebook has a fixed[…]