A “Trio” typically brings to mind a group of three people performing music together, but did you know it also exists as a unit of measurement, albeit an unconventional one? In certain contexts, particularly in gambling and some sports betting, a trio refers to a selection or combination involving three specific items or outcomes. This concept is often used in horse racing, where punters select three horses to finish in the top three positions in any order, placing bets on the “trio.”
The usage of “trio” as a unit doesn’t stop there. In ancient times, the term “trio” was used to count certain items, similar to a pair or dozen. While not as widely recognized or used in modern measurement systems, it highlights the fascinating ways in which numbers and quantities have been grouped according to cultural significance throughout history.
While we often think of a dozen as a straightforward count of 12, its counterpart, the half dozen, amounts to 6. Surprisingly, the half dozen has played a significant role throughout history and culture. Derived from the Old French word “douszain,” the dozen has deep roots in ancient measurements, with the half dozen naturally becoming a preferred unit for counting and packaging smaller quantities.
In baking, a half dozen is a common way to package or sell items like bagels or cupcakes, appealing for its simplicity and practicality. Beyond its culinary applications, the term “half dozen” is frequently used in expressions and idioms, highlighting the innate human preference for dealing with manageable chunks of numbers.
| Trio | Half Dozen |
|---|---|
0
trio
|
0
half-dozen
|
0.5
trio
|
0.25
half-dozen
|
1
trio
|
0.5
half-dozen
|
1.5
trio
|
0.75
half-dozen
|
2
trio
|
1
half-dozen
|
2.5
trio
|
1.25
half-dozen
|
3
trio
|
1.5
half-dozen
|
3.5
trio
|
1.75
half-dozen
|
4
trio
|
2
half-dozen
|
4.5
trio
|
2.25
half-dozen
|
5
trio
|
2.5
half-dozen
|
5.5
trio
|
2.75
half-dozen
|
6
trio
|
3
half-dozen
|
6.5
trio
|
3.25
half-dozen
|
7
trio
|
3.5
half-dozen
|
7.5
trio
|
3.75
half-dozen
|
8
trio
|
4
half-dozen
|
8.5
trio
|
4.25
half-dozen
|
9
trio
|
4.5
half-dozen
|
9.5
trio
|
4.75
half-dozen
|
10
trio
|
5
half-dozen
|
10.5
trio
|
5.25
half-dozen
|
11
trio
|
5.5
half-dozen
|
11.5
trio
|
5.75
half-dozen
|
12
trio
|
6
half-dozen
|
12.5
trio
|
6.25
half-dozen
|
13
trio
|
6.5
half-dozen
|
13.5
trio
|
6.75
half-dozen
|
14
trio
|
7
half-dozen
|
14.5
trio
|
7.25
half-dozen
|
15
trio
|
7.5
half-dozen
|
15.5
trio
|
7.75
half-dozen
|
16
trio
|
8
half-dozen
|
16.5
trio
|
8.25
half-dozen
|
17
trio
|
8.5
half-dozen
|
17.5
trio
|
8.75
half-dozen
|
18
trio
|
9
half-dozen
|
18.5
trio
|
9.25
half-dozen
|
19
trio
|
9.5
half-dozen
|
19.5
trio
|
9.75
half-dozen
|
20
trio
|
10
half-dozen
|
20.5
trio
|
10.25
half-dozen
|
21
trio
|
10.5
half-dozen
|
21.5
trio
|
10.75
half-dozen
|
22
trio
|
11
half-dozen
|
22.5
trio
|
11.25
half-dozen
|
23
trio
|
11.5
half-dozen
|
23.5
trio
|
11.75
half-dozen
|
24
trio
|
12
half-dozen
|
24.5
trio
|
12.25
half-dozen
|
25
trio
|
12.5
half-dozen
|
25.5
trio
|
12.75
half-dozen
|
26
trio
|
13
half-dozen
|
26.5
trio
|
13.25
half-dozen
|
27
trio
|
13.5
half-dozen
|
27.5
trio
|
13.75
half-dozen
|
28
trio
|
14
half-dozen
|
28.5
trio
|
14.25
half-dozen
|
29
trio
|
14.5
half-dozen
|
29.5
trio
|
14.75
half-dozen
|
30
trio
|
15
half-dozen
|
30.5
trio
|
15.25
half-dozen
|
31
trio
|
15.5
half-dozen
|
31.5
trio
|
15.75
half-dozen
|
32
trio
|
16
half-dozen
|
32.5
trio
|
16.25
half-dozen
|
33
trio
|
16.5
half-dozen
|
33.5
trio
|
16.75
half-dozen
|
34
trio
|
17
half-dozen
|
34.5
trio
|
17.25
half-dozen
|
35
trio
|
17.5
half-dozen
|
35.5
trio
|
17.75
half-dozen
|
36
trio
|
18
half-dozen
|
36.5
trio
|
18.25
half-dozen
|
37
trio
|
18.5
half-dozen
|
37.5
trio
|
18.75
half-dozen
|
38
trio
|
19
half-dozen
|
38.5
trio
|
19.25
half-dozen
|
39
trio
|
19.5
half-dozen
|
39.5
trio
|
19.75
half-dozen
|
40
trio
|
20
half-dozen
|
40.5
trio
|
20.25
half-dozen
|
41
trio
|
20.5
half-dozen
|
41.5
trio
|
20.75
half-dozen
|
42
trio
|
21
half-dozen
|
42.5
trio
|
21.25
half-dozen
|
43
trio
|
21.5
half-dozen
|
43.5
trio
|
21.75
half-dozen
|
44
trio
|
22
half-dozen
|
44.5
trio
|
22.25
half-dozen
|
45
trio
|
22.5
half-dozen
|
45.5
trio
|
22.75
half-dozen
|
46
trio
|
23
half-dozen
|
46.5
trio
|
23.25
half-dozen
|
47
trio
|
23.5
half-dozen
|
47.5
trio
|
23.75
half-dozen
|
48
trio
|
24
half-dozen
|
48.5
trio
|
24.25
half-dozen
|
49
trio
|
24.5
half-dozen
|
49.5
trio
|
24.75
half-dozen
|
50
trio
|
25
half-dozen
|
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