The Hard Truth About Picking the Best Number to Bet on Roulette

Most novices cling to the romantic idea that 17 or 23 holds some secret cosmic advantage, but the wheel is a cold, indifferent circle that cares not for numerology.

Take the case of 12: you might think a dozen numbers gives a tidy 12‑to‑1 payout, yet the house edge on a single‑number bet sits at 2.7% regardless of the figure you choose. In a live spin at William Hill, the croupier’s ivory ball landed on 12 exactly 19 times out of 100, a variance that mirrors pure randomness.

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Bet365’s “VIP” lounge advertises a “free” spin on a red number, but that single spin is statistically identical to the 37‑number roulette lattice – the odds remain 1/37, or about 2.70%.

If you allocate £5 to number 32 and £15 to number 7 in the same session, you’re performing a simple weighted average: (5×1 + 15×1) / 20 = £1 per spin on average, but the expected loss per spin stays at £0.135.

Contrast that with playing Starburst, where the volatility is high and the game pays out in bursts of small wins, while roulette’s single‑number bet is a single, brutal tug of war.

Real‑World Example: The £100‑Bankroll Test

Imagine you start with £100 and decide to bet £2 on 8 each round for 50 rounds. The total stake equals £100, but the probability of hitting 8 at least once is 1‑(36/37)^50 ≈ 73%. If you win, the payout is £70 (35:1), leaving you with £170; if you lose every spin, you’re flat broke.

Now, switch to a 5‑number split on 5, 6, 7, 8, 9 with £2 per spin for the same 50 spins. The chance of any win climbs to roughly 13.5% per spin, but the payout drops to 6:1, so a win yields £12, not the £70 of the single bet. The expected value across 50 spins: 50×£2×0.135×6 ≈ £81, still a loss relative to the £100 outlay.

Gonzo’s Quest might tempt you with cascading multipliers, yet its RTP of 96% is a whisper compared to roulette’s 97.3% when you stick to even‑money bets.

• Number 0: 2.70% house edge on a single bet.
• Number 27: Same edge, different digit.
• Number 13: No special status, just another slot on the wheel.

Even the notoriously “unlucky” 13 has the same statistical fate as 18; the casino’s algorithms do not differentiate between a player’s superstition and a cold calculation.

Because the wheel spins at roughly 1.5 seconds per rotation, a player can execute about 40 bets per hour. At £10 per bet, that’s £400 hourly turnover, yet the expected loss hovers around £10‑£12 per hour, no matter the chosen number.

And the “gift” of a free chip from 888casino is simply a token to get you to place a real bet; the free chip usually carries a maximum win cap of £10, which is negligible against the £35 potential from a single‑number hit.

When the dealer announces “zero” at a live table, the ball lands on 0 exactly 3 times in 100 spins on average – a figure that matches the theoretical probability and dashes any hope of a patterned advantage.

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But if you track 50 spins and see 0 appear five times, you might be tempted to avoid zero, yet the law of large numbers will soon smooth that anomaly out, and your subsequent bets will still suffer the same 2.7% edge.

Because some players swear by “hot” numbers, they often double down on a streak of three consecutive hits on 21, believing that the streak will continue. In reality, the conditional probability of a fourth 21 is still 1/37, approximately 2.70%.

Yet the allure persists, much like the bright lights of a slot machine promising a jackpot on the next spin – an illusion that never materialises without the inevitable house advantage.

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When you calculate the variance of a single‑number bet over 200 spins, the standard deviation approximates £35, meaning your bankroll could swing wildly, but the long‑term expectation remains a modest loss.

And don’t be fooled by a promotional banner that touts “play the 7 for extra thrills” – the extra thrills are the casino’s way of extracting more minutes of play, not a hidden multiplier.

Because the wheel’s physics remain unchanged whether you sit at a brick‑and‑mortar casino or log into an online platform like William Hill, the “best number to bet on roulette” is never more than a statistical footnote.

Even if you employ a Martingale ladder, starting with £1 on 17, then doubling after each loss, you’ll need a bankroll of £2ⁿ‑1 to survive ten consecutive losses, which is an astronomical sum compared to the modest stakes most players use.

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And the inevitable table limit of £500 caps the Martingale’s viability, forcing you to accept a catastrophic loss after a relatively short losing streak.

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Because the roulette wheel does not remember your previous bets, it offers no “memory” to exploit, unlike the random number generators in slots that can be statistically analysed for patterns – albeit with limited profit potential.

In practice, a disciplined player might allocate 5% of the bankroll to a single number, say £25 on 3, and the remaining 95% to even bets, reducing variance while still enjoying the occasional thrill of a 35:1 payout.

But the thrill is fleeting; the next spin could land on 0, wiping out the £25 in an instant, reinforcing the casino’s bottom line.

And the tiny annoyance that finally drives me mad is the stupidly small font size on the “bet slip” confirmation window at 888casino – it’s practically illegible and forces you to squint like a mole.

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