SAT Math 3.5 Numbers and Operations

SAT Math 3.5 Numbers and Operations

LanguageEnglish Language
MathStatistics and Probability
Numbers and OperationsCounting Problems
ProbabilityCombinations
Problem Solving and Data AnalysisRatios, rates, and proportions
Product TypeSAT Math
SAT MathNumbers and Operations
Statistics and ProbabilityProbability

Transcript

00:22

And here are the potential answers...

00:25

So Ethan has to settle on a couple of toppings for his pie.

00:28

But, he’s super-thorough, so he wants to make sure he isn’t missing any of the combos.

00:33

Let’s say he wants pepperoni.

00:35

In that case, there would be 4 combinations…pep and olive, pep and shroom, pep and sausage,

00:41

and pep and pineapple.

00:43

Okay, what about if we do the same thing for olives?

00:45

Well… still 4 combos… except we already did pep and olive, so really just three more.

00:53

Same thing happens when we get to mushrooms…

00:55

…we’ve already covered two of the possible combos involving fungi,

00:59

so there are now just 2 combos remaining.

01:02

And by the time we get to sausage…the only thing it hasn’t yet been paired with is pineapple…

01:07

and we’re done.

01:08

So as each slot gets filled, we have one fewer option to choose from…

01:12

In other words, our number of possible combinations will be four plus three plus two plus one…

01:18

…or 10. Answer C.

01:20

Ethan can finally complete his order and.... he decides to get a calzone.