Which of the following is a term in mathematics?

Tariff numbers
Taxicab numbers
Bicycle numbers
Car numbers
is defined as the smallest number that can be expressed as a sum of two positive cube numbers in n distinct ways. The name is derived from a conversation in about 1919 involving mathematicians G. H. Hardy and Srinivasa Ramanujan. Hardy has ridden in taxi-cab No. 1729, and remarked that the number seemed to be rather a dull one. Ramanujan replied that the number was very interesting, as the smallest number expressible as the sum of two cubes in two different ways.
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Answers by country

Tariff numbers
Taxicab numbers
Bicycle numbers
Car numbers
answers
flagAustralia
4%
90%
4%
0%
21
flagthe Netherlands
29%
70%
0%
0%
17
flagPakistan
13%
53%
26%
6%
15
flagIndia
17%
45%
16%
19%
62
flagFrance
25%
41%
8%
25%
12
flagthe United States
28%
37%
21%
10%
66
flagPoland
39%
35%
9%
13%
3557
flagAustria
27%
31%
17%
21%
51
flagCanada
53%
26%
6%
13%
15
flagGermany
29%
24%
24%
19%
387
flagthe United Kingdom
40%
20%
28%
10%
50
flagGreece
58%
16%
0%
25%
12
flagSwitzerland
33%
14%
33%
18%
48