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Operations & Algebraic Thinking Videos 5 videos
is equivalent to which of the following?
Jackie goes to the grocery store to buy snacks for a Girl Scout Wanna-Be party. She purchases 12 boxes of cookies, each of which contains 10 cookie...
Which of the following is a prime number?
ACT Aspire Math: Appreciating a Number in Its Prime 2 Views
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Description:
Which of the following is a prime number?
Transcript
- 00:03
Okay Aspiring math people We've got a quick one for
- 00:06
you Question which of the following is a prime number
- 00:14
All right Remember prime numbers can only be divided by
- 00:16
one and itself so it's defined as any number with
- 00:19
strictly to factors itself And one got that if we
Full Transcript
- 00:23
drilled that into your brain with thes rules in mind
- 00:25
well let's just go through our answer choices One by
- 00:28
one zero can be divided by while literally any number
- 00:32
on the planet That's riel for relatively unexciting result of
- 00:36
zero So zero is not prime be one one may
- 00:40
look prime but remember that prime Numbers need 2 factors
- 00:44
1 is divisible by itself and one but since they're
- 00:46
the same number well a technically they don't count So
- 00:49
that's a no go On the other hand the number
- 00:51
two as in sea meets the criteria for prime numbers
- 00:54
perfectly because it's only factors are one into and that's
- 00:57
it So as it turns out to is the on
- 00:59
ly even prime number And that rules out for cause
- 01:02
of italy by one and two and four and finally
- 01:05
ninety three because it's divisible by while you could add
- 01:08
up the nine and three that gets you twelve and
- 01:11
twelve visible by three so right away we know it's
- 01:13
not crimes also visible by thirty one for you Strange
- 01:16
people in the back row with classes So that's it 00:01:18.322 --> [endTime] The answer is c were prime kind like amazon
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