Every day, navya's teacher randomly picks a number from 1 to 20 to be the number of the day. the number of the day can be repeated. there are 180 days in the school year. predict how many days the number of the day will be greater than 15

Hey there!

To start, out of the 20 numbers-of-the-day you can choose, there are 5 numbers in which are greater than 15.

This can be represented by the fraction 5/20 or, when simplified, 1/4. This fraction would be the probability of choosing a number greater than 15.

Because your probability or choosing a number greater than 15 would be 1/4, in order to approximate how many days of the school days the number chosen is greater than 15, you would multiply the probability of choosing a number greater than 15 by 180, the number of days at school:

1/4 * 180

This would result in your answer, 45.

Therefore, there will be 45 predicted school days where the number chosen is greater than 15.

Hope this helps and have a nice day! Let me know if you have any other questions about this answer! :)