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Mathematical Reasoning Videos 30 videos

CAHSEE Math 1.1 Mathematical Reasoning
228 Views

CAHSEE Mathematical Reasoning: Drill 1, Problem 1. Based on this information, which of the following can be determined?

CAHSEE Math 1.2 Mathematical Reasoning
185 Views

CAHSEE Math Mathematical Reasoning: Drill Set 1, Problem 2. Which of the following should be the most appropriate first step in solving the equation?

CAHSEE Math 1.3 Mathematical Reasoning
183 Views

CAHSEE Math Mathematical Reasoning: Drill 1 Problem 3. Which of the following is the correct order of steps?

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CAHSEE Math 5.3 Mathematical Reasoning 231 Views


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Description:

Mathematical Reasoning Drill 5 Problem 3. Which of the following could be the integer mentioned?

Language:
English Language

Transcript

00:03

Here’s an unshmoopy question for a rainy day…

00:06

An integer between 70 and 110 exists such that it is a multiple of 2, 3, and 5.

00:13

Which of the following could be this number?

00:15

And here are the options…

00:19

Right from the get go, we can eliminate option A, because last time we checked…

00:23

…60 was not between 70 and 110. Option B can also be eliminated because 75

00:29

is odd, which means it can’t be a multiple of 2.

00:31

Yay, elementary school math!

00:34

The next easiest step would be to eliminate C...

00:36

…because the ones digit of 84 isn’t 5 or 0, which means it’s not a multiple of 5.

00:42

And there you go!

00:43

We only have one option left. Sure enough, 90 is a multiple of 2, 3 and 5.

00:48

So our answer is D.

00:49

As in, “Divides evenly.”

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