by BlastRoom
Deciding whether order matters in a counting problem before any arithmetic is done.
#probability_and_statistics

24 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.

The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
A yearbook committee will choose 3 of its 11 members to attend a conference, and all three attend in the same role. Which counting tool should be used?
A gallery will select 4 of 10 student photos and arrange them in four labeled spots on a wall. Which counting tool fits this display?
A book drive will choose 4 of 16 donated books for one gift bag, and the bag has no ordered slots. What counting tool is appropriate?
Nine finalists are eligible for gold, silver, and bronze medals. What counting tool should count the possible medal results?
A teacher will select 2 of 8 students to be lab partners for one experiment, with no separate roles. Which counting tool applies?
A security system makes a 5-symbol code from 10 symbols, with no repeats, and the first symbol is not the same as the last symbol. Which tool counts the codes?
A podcast host chooses 4 of 13 questions to ask a guest, and the questions may be asked in any order later. Which counting tool counts the possible sets of questions?
A cafeteria lets a student pick 3 of 9 side dishes for a tray, with no first, second, or third side dish. Which tool counts the possible trays?
A club with 12 members will choose a president, vice president, and treasurer. Which counting tool should be used?
A test writer selects 5 of 20 review problems for a practice packet, and the selected problems will simply be included. What tool counts the possible packets?
Judges will rank the top 4 of 18 science fair projects from first place through fourth place. Which counting tool is needed?
A coach selects 6 of 14 players for a skills clinic, and every selected player has the same role. Which counting tool fits?
A ceremony planner chooses 5 of 11 speakers and assigns them to speaking slots 1 through 5. Which tool counts the possible schedules?
A student chooses 2 of 7 electives for next semester, with no preference order recorded. Which counting tool should count the possible choices?
A track coach has two tasks: choose 4 of 10 sprinters for a relay team; assign those 4 sprinters to legs 1 through 4. Which task is counted by a permutation?
An art club has two tasks: pick 3 of 12 posters for a display; place the chosen posters in left, center, and right spots. Which task uses a permutation?
A swim coach has two tasks: select 5 of 14 swimmers for a heat; assign those swimmers to lanes 1 through 5. Which task is counted by a permutation?
A teacher has two tasks: select 5 of 15 students for a panel; seat the selected students in five labeled chairs. Which task should be counted by a permutation?
A library has two tasks: choose 6 of 20 books for an exhibit; arrange the chosen books in order on a shelf. Which task is a permutation?
A florist will choose 4 of 11 flower types for a bouquet, and the chosen flowers are simply grouped together with no order or role. Which expression counts the possible bouquets?
A museum will hang 5 of its 12 paintings along a hallway, and the left-to-right position of each painting matters. Which expression counts the possible displays?
A school will choose 4 of 13 volunteers for one cleanup committee, and all committee members have the same role. Which expression counts the possible committees?
A teacher assigns 3 distinct jobs, host, timer, and recorder, to 3 of 10 students. Which expression counts the possible assignments?
A farm will choose 6 of 16 seedlings for a test plot, and the selected seedlings will be treated alike. Which expression counts the possible groups?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.

Pick a tile, answer, hit bonuses and steals.
Discrete Probability Distributions
40 questions