a medical researcher needs 6 people to test the effectiveness of an
experimental drug. if 13 people have volunteered for the test, in how many
ways can 6 people be selected? *

combination; 1,716 or permutation; 1,235,520

Idk sr i just need to answer 1 question

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.