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What are the odd numbers between 10 and 30 as the sum of three odd primes?
10
What are the composite numbers from 10-30?
11, 13, 17, 19, 23, 29 are the primes between 10 and 30 so the composite numbers are all the others. 12,14,15,16,18,20,21,22,24,25,26,27,28, and 30 are the composite numbers between 10 and 30.
Why the even numbers between 20 and 30 cant be primes?
Every even number is evenly divisible by 2.
What fraction of numbers 1 to 30 is prime?
Simply add up the primes - those numbers other than 1 whose only factors are 1 and themselves. 2,3,5,7,11,13,17,19,23,29 are all the primes from 1 to 30. There are 10 of them, and the set of integers from 1 to 30 encompasses 30 numbers, so 1/3 of the integers from 1 to 30 are prime. Technically there are infinite NUMBERS between 1 and 30 (0.1, 9.57, 0.000001, ...) but only 30 integers (1,2,3, ...). If the question is phrased with the word "numbers" and not "integers" then the answer should technically be 10 primes divided by infinite numbers, and anything over infinity is 0, so your answer would be 0. So answer either 1/3 or 0; if you haven't really talked about infinity then it is probably 1/3 they are looking for.
What are all the prime numbers between 30 and 60?
Well, darling, between 30 and 60, we have the prime numbers 31, 37, 41, 43, 47, 53, and 59. So, there you have it, a prime selection of numbers for you to enjoy. Now, go forth and conquer those primes like the math whiz you are!
