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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 two digit prime numbers have a units digit of 7 and what are the prime numbers?
17, 37, 47, 67, 97
What is the ratio of the number of one-digit prime numbers and the number of one-digit composite numbers?
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
What are the single digit prime numbers?
1,2,3,5,7
How many 2 digit prime numbers are there whose unit digit is greater its tens digit?
Ten.
What is the greatest six digit number you can write if each digit must be different and no digit may be prime?
Its impossible, there are only 5 single digit numbers that are not prime
What is the probability that the sum of two different single-digit prime numbers will NOT be prime?
1/2
How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
What is the least three-digit number that is divisible by three different prime numbers?
102.
How many three digit numbers have odd prime number as 1st digit A prime number as 2nd digit and an odd number as 3rd digit?
There are 17 such numbers.
What are all of the one-digit prime numbers?
2, 3, 5, and 7 are the only one-digit prime numbers.
What is the largest two-digit number that is prime and has prime numbers for both of its digits?
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
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 two digit prime numbers have a units digit of 7 and what are the prime numbers?
17, 37, 47, 67, 97
What is the largest 3 digit prime numbers?
997 is the largest 3-digit prime number.
What are 3 digit composite numbers which are relatively prime?
Composite numbers are numbers greater than 1 that have more than two factors. Relatively prime numbers are numbers that have no common factors other than 1. Therefore, to find 3-digit composite numbers that are relatively prime, we need to look for numbers that are composite and have no common factors. An example of such a pair of 3-digit composite numbers that are relatively prime would be 119 and 143.
What is the largest 2 digit number that is both prime and has prime numbers for both of its digits?
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
