Both of these are acceptable for 640:
3 x 5 x 5 = 75
2 x 2 x 3 x 7 = 84
All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this. Example: 210 210 Divide by two. 105,2 Divide by three. 35,3,2 Divide by five. 7,5,3,2 Stop. All the factors are prime. 2 x 3 x 5 x 7 = 210 That's the prime factorization of 210.
To show that the statement is false, consider the even numbers 2 and 4. Their product is (2 \times 4 = 8), which is even. Now, if we add the odd number 1 to this product, we get (8 + 1 = 9), which is odd. This counterexample demonstrates that the statement is incorrect, as the result can be odd when an odd number is added to the product of two even numbers.
It will take six. 2 x 2 x 2 x 2 x 2 x 2 = 64
Showing a composite number as a product of prime numbers is called prime factorization.
24 as a product of prime numbers is 2 x 2 x 2 x 3.
3 x 5 x 5 = 75
Impossible. The number is infinite.
There are no prime numbers in that range.
2 x 2 x 3 x 7 = 84
All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this. Example: 210 210 Divide by two. 105,2 Divide by three. 35,3,2 Divide by five. 7,5,3,2 Stop. All the factors are prime. 2 x 3 x 5 x 7 = 210 That's the prime factorization of 210.
23 is a prime number so there is no prime factorization. Some consider it to be acceptable to write 1 X 23 in order to show the number is prime, even though 1 is not a prime or composite number.23 is already prime.
The surviving records of the ancient Egyptians show that they had some knowledge of prime numbers
No. The easiest counter-example to show that the product of two irrational numbers can be a rational number is that the product of √2 and √2 is 2. Likewise, the cube root of 2 is also an irrational number, but the product of 3√2, 3√2 and 3√2 is 2.
A prime number can only be multiplied by one or by itself.the best part about this is that the only even prime number is two...others are all odd numbers. What im trying to do is not just giving you the answer...but if I show you how to do it you could turn it into a two minute problem :D
To show that the statement is false, consider the even numbers 2 and 4. Their product is (2 \times 4 = 8), which is even. Now, if we add the odd number 1 to this product, we get (8 + 1 = 9), which is odd. This counterexample demonstrates that the statement is incorrect, as the result can be odd when an odd number is added to the product of two even numbers.