To find two numbers whose sum is 1.9 from the given options, we can first convert the fractions and mixed numbers to decimal form for easier comparison:
- -0.2 = -0.2
- -0.4 = -0.4
- 2/1 = 2.0
- -0.5 = -0.5
- 2 1/10 = 2.1
- -0.3 = -0.3
- -0.1 = -0.1
- 23/10 = 2.3
- 2 2/5 = 2.4
- 11/5 = 2.2
Now, let's look for pairs of these numbers that add up to 1.9:
- 2.0 and -0.1:
- 2.0 + (-0.1) = 1.9
- 2.1 and -0.2:
- 2.1 + (-0.2) = 1.9
- 2.3 and -0.4:
- 2.3 + (-0.4) = 1.9
- 2.4 and -0.5:
- 2.4 + (-0.5) = 1.9
- 2.2 and -0.3:
- 2.2 + (-0.3) = 1.9
All of the above combinations give us pairs whose sum is 1.9. Thus, any of these pairs is a valid answer.
For example, one such pair is:
- 2.0 and -0.1.