A spinner contains 4 red, 6 blue, and 10 green sectors. What is the probability of landing on blue?

To determine the probability of landing on blue when spinning the spinner, you need to first calculate the total number of sectors the spinner has. In this case, there are 4 red, 6 blue, and 10 green sectors. Adding these gives a total of:

4 (red) + 6 (blue) + 10 (green) = 20 (total sectors).

Next, to find the probability of landing on blue, divide the number of blue sectors by the total number of sectors:

Number of blue sectors = 6

Total sectors = 20

So, the probability of landing on blue is:

Probability of blue = Number of blue sectors / Total sectors

= 6 / 20

= 0.3.

This result indicates that the probability of landing on blue is 0.3, which can also be expressed as 30%.

Hence, the correct probability of landing on blue is 0.3, making the most suitable answer the first choice provided.