SAT Math 4.3 Numbers and Operations

SAT Math 4.3 Numbers and Operations

Elementary Number TheoryPrime Numbers
LanguageEnglish Language
Passport to Advanced MathRadicals and rational exponents
Pre-AlgebraProperties of Numbers
Product TypeSAT Math
Properties of NumbersBasics of Numbers
SAT MathNumbers and Operations

Transcript

00:15

is to substitute real prime numbers for the variables.

00:20

Let's say a = 2 and b = 3.

00:24

Now we can test each answer choice.

00:27

Choice A: 2 times 3 is 6. 6 is not prime. Boom -- gone.

00:32

Choice B: 2 cubed is 8. 8 isn't prime. Outta here.

00:37

Choice C: 2 plus 3 is 5. 5 is prime.

00:42

Choice D: 3 squared is 9. 9 isn't prime.

00:46

Only choice C can give us a prime number... ...so that's our answer.

00:57

An answer choice by any other letter would smell as sweet...