Question

the sum of three decimal numbers is 6 exactly one of the numbers is less than 1 what could the numbers be

Answer 1

The 3 numbers could be 0.5, 1.1 and 4.4.

In the list above, there is only 1 number less than 1. It is 0.5.
The other 2 numbers are larger than 1.

If you add up the 3 numbers you will have exactly 6.

0.5 + 1.1 + 4.4 = 6