<p>when do u know wat to use? And in one of the BB math questions, they asked “u have 3 stones and 4 shoes, wat’s the possible combination of stones and shoes”. The answer was 12. So for combination, u just multiply those too? Or is it a diff kind of combination in this context?
Help… :D</p>
<p>combination means how many ways can you put them together so you’ll get an actual number more than 1.</p>
<p>probability means what are the chances of you picking this type of orientation/combination. So you’ll usually end up with some type of fraction 1/2, 2/5, 13/100, etc. </p>
<p>to answer your question, yes you do multiply 3 and 4. draw out 3 stones and 4 shoes on a paper and see how many combinations you can make.</p>