VERIFIED TO PASS 2026
U - correct answer ✔union
n - correct answer ✔intersection
deck of cards - correct answer ✔52, 13 of each face
Probability - correct answer ✔# of times it can occur/total possible outcomes
Expected value - correct answer ✔(event 1 value x event 1 prob) + (event 2 value x event 2 prob) ....
Arrangements - correct answer ✔- repeats, order doesn't matter
- solve by multiplying values
Permutations - correct answer ✔- no repeats, order matters
- solve with nPr
Combinations - correct answer ✔- no repeats, order doesn't matter
- solve with nCr