Most common Toto number pairs — and why no pair is "due"
Some players build tickets around number pairs that "keep coming up together". We counted every pair in 688 Singapore Toto draws, then checked whether the leaders stand out from what chance alone produces.
How often should a pair appear?
There are 1,176 possible pairs of numbers from 1 to 49, and every draw contains 15 of them (the six winning numbers paired every way). So any particular pair — say 7 and 23 — turns up in a given draw with probability 15 in 1,176, about 1 in 78. Over 688 draws, each pair is expected about 8.8 times.
The 10 most frequent pairs since 2020
| Pair | Times together | vs expected |
|---|---|---|
215 | 18 | 2.1× |
1015 | 17 | 1.9× |
1016 | 17 | 1.9× |
817 | 17 | 1.9× |
637 | 17 | 1.9× |
549 | 17 | 1.9× |
2135 | 16 | 1.8× |
3438 | 16 | 1.8× |
145 | 16 | 1.8× |
3249 | 16 | 1.8× |
Main numbers only. Ties are ordered by number.
Are the leaders special?
The top pair appeared together 18 times, about 2.1 times the average. That sounds remarkable until you remember there are 1,176 pairs competing. If every pair had exactly the same chance, we would still expect about 5 pairs to reach 18 or more appearances in 688 draws. The leaderboard is exactly what randomness produces.
- Every possible pair has appeared at least once. The rarest pairs, such as 6–38 (1×), 18–46 (1×), 2–23 (2×), sit at the other end of the same random spread.
- Triples are even noisier. Any given three numbers are expected together only 0.7 times in 688 draws, yet the top triple (3–10–32) appeared 6 times. With 18,424 possible triples, a few will always look "hot".
Is a cold pair "due"?
No. The draw machine has no memory. A pair that has appeared 1 time since 2020 has exactly the same 1 in 78 chance in the next draw as the pair at the top of the table. This is the gambler's fallacy — the belief that results balance out in the short run. Over thousands of draws the counts do drift towards the average, but only because new draws swamp the old gaps, not because the machine corrects them.
Using pairs sensibly
If you enjoy playing favourite pairs, a wheel is the efficient way to do it: put the numbers in your pool and a 4-if-4 wheel will place every pair from your pool together on at least one ticket. Just treat the pair counts as history, not prediction.
Related: hot and cold numbers, consecutive numbers.