Expected value is Σ(prize_i × p_i) − ticket price. Korean Lotto 6/45 first-prize space is C(45,6)=8,145,060. Advertised jackpots are often pre-tax and pre-split; multiple winners carve the pot. “The headline looks large” and “this ticket’s EV is positive” are different sentences. lottery-odds is combinatorics; powerball-vs-lotto6 compares spaces. This landing writes why the sign is usually negative. Hot numbers and saju slips do not change EV.
EV = (jackpot contribution + lower tiers) − price. Jackpot contribution is roughly (estimated pot × p_first) / expected winners. A bad estimate makes a bad EV.
A rollover grows the numerator. Tax and annuity versus cash cut what you keep. Do not read a press line as take-home.
8,145,060 is a count of combinations. EV needs a prize table too. Different URL.
Entertainment budget. No loans, no all-in. A briefly positive EV still has extreme variance. Addiction is counselling. We do not sell a system.
| EV | Σ(prize×p) − price |
|---|---|
| 6/45 first | C(45,6)=8,145,060 |
| Ad jackpot | Often pre-tax / pre-split |
| Odds page | Other URL |
The house is usually favoured. Not a buy signal.
For entertainment and arithmetic. Expected value and odds are not a winning tip or investment advice. Draws are random.