If a person chooses a number at random from the set below, what is the probability that the number is less than 0.005? Explain how you know. {0.1, 0.01, 0.001, 0.0001, 0.00001}

To calculate the probability that the randomly chosen number is less than 0.005, we need to determine how many numbers in the set are less than 0.005, and then divide that by the total number of possible outcomes.

In this set, only the numbers 0.001, 0.0001, and 0.00001 are less than 0.005. So there are 3 numbers out of a total of 5 in the set that are less than 0.005.

Therefore, the probability that the randomly chosen number is less than 0.005 is 3/5 or 0.6 (or 60%).