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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?
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…
Full Transcript
- 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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CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.
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