Astudent is required to work exactly ten problems from a twenty-problem exam. in how many ways can the problems be chosen?

10 out of 20 ways

Step-by-step explanation:

If he has to work exactly 6 out of 10 and 3 out of the first 4, then he must work exactly 3 out of the last 6. Hence, the answer to this question is to be found in the sum of the number of ways to select 3 things from 4 things plus the number of ways to select 3 things from 6 things:

You can do your own arithmetic.

Hope this helps and please give me Brainliest!

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

answer: the answer is c.

step-by-step explanation:

she’s dividing 1/3 of the flour into 2 jars.

hope this : )