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How many prime numbers are there in 21?
21 has two prime factors.
How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
What is the LCM of two co prime numbers?
Product of the two prime numbers is the LCM. For example 3, 7 have 21 as LCM
Is 21 seven a prime number?
21 is the product of two prime numbers, three and seven. A prime number is defined as a number divisible only by one or itself. So ... NO ... 21 is not a prime number.
What prime numbers fall between 21 and 30?
23 and 29 are the only two numbers that fall between 21 and 30
What prime numbers equal to 21?
if you mean their product is 21, then 7x3=21
How many prime numbers are there in 21?
21 has two prime factors.
How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
What two numbers equal 42?
21 and 21 equal 42.
How many different prime numbers are in the prime factorization of 21?
Two.
What two numbers multiplied equal 105 and added equal -26?
79
What is the LCM of two co prime numbers?
Product of the two prime numbers is the LCM. For example 3, 7 have 21 as LCM
What two of the same numbers equal 21?
10.5 + 10.5 = 21
How many 2 digit prime numbers are there?
There are 21 two-digit prime numbers. The first two-digit prime number is 11, and the last two-digit prime number is 97. Prime numbers are numbers greater than 1 that are only divisible by 1 and themselves.
How many different prime numbers are in 21?
There are two different numbers. 3 and 7
What two mixed numbers are equal to 7?
21
What are two prime numbers whose sum is 42?
Split the number in half and make an equation adding the two together to make the desired amount. Unless the number that is half the total is prime, adjust the first number down by an amount to make it a prime number, then adjust the second one up by an equal amount and check whether it is also a prime number. If the second number is also a prime number, you have found two prime numbers that equal the desired amount. If not, adjust the first number down to another prime number, repeating the procedure above until you have two prime numbers.If you split 42 in half, the result is 21. Take the equation 21 + 21 = 42. Since 21 is not prime, adjust the first number down to 19 which is the first prime number below 21. That means the other number would be 23, which is prime. So, you have two prime numbers that add up to 42 = 19 + 23.The prime factorization of 42 is 2 x 3 x 7, so it has three factors that are prime: 2, 3, and 7.
