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How many of the first ten whole numbers can be expressed as the sum of the two different primes?
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What are the First 5 primes?
the first 5 primes are 2,3,5,7,11
What is the unit's digits of the product of the first 21 prime numbers?
Oh, dude, you want to know the unit's digits of the product of the first 21 prime numbers? Well, let me casually tell you that the unit's digit of a product depends on the unit's digits of the numbers being multiplied. Since the unit's digit of all prime numbers greater than 5 is either 1, 3, 7, or 9, the product of the first 21 prime numbers will end in a unit's digit that is a result of multiplying these digits together. Cool, right?
What is the sum of the first four composite numbers?
You can figure out the "composite numbers" from any table of primes - all the positive integers that are not prime numbers are composite (the number one should also be excluded). The first four composite numbers are:4, 6, 8, 9
How many of the first ten positive whole numbers can be expressed as the sum of two different prime numbers?
5 (2 + 3), 7 (2 + 5), 8 (3 + 5), 9 (2 + 7) and 10 (3 + 7).
A number is chosen at random from the first 20 positive whole numbers What is the probability that it is not a prime number?
There are 12 composite (and 8 primes) in the first twenty whole numbers. So the probability of randomly choosing a non-prime is 12/20 or 60%.
What number has exactly 3 prime different factors one which is 5 and is divisible by 11 the first digit is a square number the last two digits are different primes numbers?
935
What is the probability of choosing a prime number?
Although there are infinitely many primes, they become rarer and rarer so that as the number of numbers increases, the probability that picking one of them at random is a prime number tends to zero*. In the first 10 numbers there are 4 primes, so the probability of picking one is 4/10 = 2/5 = 0.4 In the first 100 numbers there are 26 primes, so the probability of picking one is 25/100 = 1/4 = 0.25 In the first 1,000 numbers there are 169 primes, so the probability of picking one is 168/1000 = 0.168 In the first 10,000 numbers there are 1,229 primes, so the probability of picking one is 0.1229 In the first 100,000 numbers there are 9592 primes, so the probability of picking one is 0.09592 In the first 1,000,000 numbers there are 78,498 primes, so the probability of picking one is 0.078498 In the first 10,000,000 numbers there are 664,579 primes, so the probability of picking one is 0.0664579 * Given any small value ε less than 1 and greater than 0, it is possible to find a number n such that the probability of picking a prime at random from the numbers 1-n is less than the given small value ε.
What two numbers is prime numbers?
There are infinitely many primes, not just two. The first two are 2 and 3.
How many groups of consecutive prime numbers are t(ere in the first 99 primes?
There is just one group: 2 and 3. No other primes are consecutive.
What are the numbers that have exactly 8 factors?
There are several ways for such a number to be constructed: It can be the seventh power of a prime. It can be the third power of a prime multiplied by the third power of another prime. It can be the third power of a prime multiplied by the first power of two other primes. It can be the first power of three different primes.
What are the First 5 primes?
the first 5 primes are 2,3,5,7,11
Median of first five prime numbers?
5, basically the thrid prime in the first 5 primes
What is the least positive number that is divisible by three different primes?
30, which is the smallest positive integer divisible by the first three primes: 2, 3 and 5.
Who is the man who first defined primes in 300 BC?
The first man to define prime numbers in 300 BC. was a Greek mathematician named Euclid.
How can you compare rational numbers?
Subtract one from the other.If the answer is positive then the first is larger,if the answer is negative, then the second is larger.Rational numbers are numbers that can be expressed as fractions whereas irrational numbers can't be expressed as fractions.
What are the next twin prime numbers after 2 and 3?
Well, to begin with, 2 and 3 are not twin primes. The first twin primes are 3 and 5, but then 5 and 7 are also twin primes. After that, it's 11 and 13, then 17 and 19, 29 and 31, and 41 and 43. Twin primes are distinguished by having a difference of 2 between them.
What is the unit's digits of the product of the first 21 prime numbers?
Oh, dude, you want to know the unit's digits of the product of the first 21 prime numbers? Well, let me casually tell you that the unit's digit of a product depends on the unit's digits of the numbers being multiplied. Since the unit's digit of all prime numbers greater than 5 is either 1, 3, 7, or 9, the product of the first 21 prime numbers will end in a unit's digit that is a result of multiplying these digits together. Cool, right?
