There are infinitely many of them.
3.751, 3.7501, 3.75001, 3.750001, etc
3.752, 3.7502, 3.75002, etc
etc
all the way to 3.8499...
They can be 5.05, 5.06. 5.07, 5.08 and 5.09 of which when rounded to the nearest tenth is 5.1
Rounded to the nearest tenth, there can be only one decimal. And that is 7.8
7.2
3.8
0.068 rounded to the nearest tenth is 0.1.
It needs to have decimals in order to round it to the nearest tenth ex:81.48 would be rounded to 81.5 because 4 is in the tenths place
2.7
They can be 5.05, 5.06. 5.07, 5.08 and 5.09 of which when rounded to the nearest tenth is 5.1
Rounded to the nearest tenth, there can be only one decimal. And that is 7.8
7.2
3.8
1.08 rounded to the nearest tenth is 1.1
0.068 rounded to the nearest tenth is 0.1.
It then is 1.5 when rounded to the nearest tenth
It is 64.2 when rounded to the nearest tenth
It is 3.1 rounded to the nearest tenth
It is 8.5 rounded to the nearest tenth