For this problem, a non-integer answer should be entered as a fraction in simplest form using / as the fraction bar.

Malik randomly picked two numbers from 1 to 9 (including 1 and 9). The same number could be picked more than once. The first of the two numbers he picks is odd and less than 5.

What is the probability that the sum of the two numbers Malik picks is less than 5, given that the first number is odd and less than 5?

Question

For this problem, a non-integer answer should be entered as a fraction in simplest form using / as the fraction bar.

Malik randomly picked two numbers from 1 to 9 (including 1 and 9). The same number could be picked more than once. The first of the two numbers he picks is odd and less than 5.

What is the probability that the sum of the two numbers Malik picks is less than 5, given that the first number is odd and less than 5?

Timmyspu · Answer

So what is the first step we have to do here @alaura? Also welcome to Question cove and if you have any questions feel free to dm me.

Mercury · Answer

old question but will respond so this can be closed

this is a conditional probability in which the first number is already defined as being odd and less than 5 (so only 1 and 3)

the total sum must be less than 5 (so anywhere from 2-4. the sum cannot be 1 since the lowest possibility is 1 + 1 which is 2)

for each case (rolling either a 1 or a 3) consider what possible outcomes for the second roll would fulfill the requirement (sum 2-4) and calculate the corresponding probability.