Doubles, Trebles & Multiples Explained
Doubles, trebles and multiples are all forms of combined bets.
They are often grouped together, but each term refers to a specific structure based on the number of selections involved.
This guide explains what doubles, trebles and multiples are, how they work, and how they differ — without tips or recommendations.
What is a double?
A double combines two selections into a single bet.
- both selections must win
- if one selection loses, the entire bet loses
Because only two selections are involved, doubles have:
- lower variance than larger multiples
- lower potential returns compared to trebles or higher multiples
What is a treble?A treble combines three selections into one bet.
- all three selections must win
- one losing selection causes the bet to lose
Compared to doubles:
- probability is lower
- potential return is higher
The increase in return comes from compounded probability, not advantage.
What is a multiple?
A multiple is a general term for any bet that combines four or more selections.Examples include:
- fourfolds
- fivefolds
- sixfolds and higher
As the number of selections increases:
- probability decreases rapidly
- variance increases significantly
How odds are calculatedFor doubles, trebles and multiples:
- odds are calculated by multiplying the odds of each selection
- probability compounds across selections
Example
- Selection A: 1.80
- Selection B: 2.00
- Selection C: 1.70
Treble odds:1.80 × 2.00 × 1.70 = 6.12Higher odds reflect lower probability, not improved value.
Final Note
Doubles, trebles and multiples are simply different sizes of the same structure.Understanding how they work helps clarify:
why odds increase
why probability decreases
why combined bets behave differently from singles
For related guides, continue with:
• Accumulators & Multiples Explained• Bet Builder Explained• Probability vs Odds