Which of the following numbers is prime? 12 15 7 6
2 answers:
Answer:
The number (7) is a prime number.
<h3>What are prime and composite numbers?</h3>- <em>Prime numbers</em> are such numbers that should have two factors, one and the number itself. An example of a prime number could be "2".
Factors of 2: 1 and 2 (Verifies the above definition)
- <em>Composite numbers</em> are such numbers that have more than two factors. An example of a composite number could be 4.
Factors of 4: 1, 2 and 4 (Verifies the above definition)
<h3><u>Option A</u></h3>Given number: 12
Let's list the factors of this number.
- ⇒ Factors of 12: 1, 2, 3, 4, 6, 12
The number provided is not a prime number because the number has more than two factors. Therefore, Option A is not correct.
<h3><u>Option B</u></h3>Given number: 15
Let's list the factors of this number.
- ⇒ Factors of 15: 1, 3, 5, 15
The number provided is not a prime number because the number has more than two factors. Therefore, Option B is not correct.
<h3><u>Option C</u></h3>Given number: 7
Let's list the factors of this number.
- ⇒ Factors of 7: 1 and 7
The number provided is a prime number because the number has exactly two factors. Therefore, Option C is correct.
<h3><u>Option D</u></h3>Given number: 6
Let's list the factors of this number.
- ⇒ Factors of 6: 1, 2, 3, and 6
The number provided is not a prime number because the number has more than two factors. Therefore, Option D is not correct.
Learn more about Prime and Composite numbers:
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Answer is 54^2.
since there are triangles in this one, it is easier to do this. all you have to do is make boxes in and since there are angles, outside the lines. like this picture.
the orange is 1
red and dotted is 2
blue is 3
purple is 4(a regular box which should be easy to count.
all you have to do is add up all the boxes within the boundaries.
boundary 1: 12
boundary 2: 18
boundary 3: 6
boundary 4: 36
now when the boundary has a triangle in it (1, 2, & 3) divide the number you got in half or 2.
boundary 1: 6
boundary 2: 9
boundary 3: 3
the ractangle box doesn't not get divided.
boundary 1: 6
boundary 2: 9
boundary 3: 3
boundary 4: 36
add all the numbers you got now for each boundary and that would be your area squared.
6+9+3+36=54^2
so your final answer is 54^2.
i hope this helps you.
since there are triangles in this one, it is easier to do this. all you have to do is make boxes in and since there are angles, outside the lines. like this picture.
the orange is 1
red and dotted is 2
blue is 3
purple is 4(a regular box which should be easy to count.
all you have to do is add up all the boxes within the boundaries.
boundary 1: 12
boundary 2: 18
boundary 3: 6
boundary 4: 36
now when the boundary has a triangle in it (1, 2, & 3) divide the number you got in half or 2.
boundary 1: 6
boundary 2: 9
boundary 3: 3
the ractangle box doesn't not get divided.
boundary 1: 6
boundary 2: 9
boundary 3: 3
boundary 4: 36
add all the numbers you got now for each boundary and that would be your area squared.
6+9+3+36=54^2
so your final answer is 54^2.
i hope this helps you.