Can a number be prime and composite at the same time?

A number cannot be both prime and composite.

Will you always get a sum that is composite When you add two prime numbers?

Answer: Approach: The sum of two prime numbers is always even which is composite as they are odd numbers except 2.

What is the probability that the sum is a prime number?

5/12
When two dice are thrown, the total number of sample spaces is 36. Hence, the probability of getting a sum of prime numbers = 15/36 = 5/12.

What is the probability of the event that a number chosen from 1 to 50 is a prime number?

Step-by-step explanation: IN BETWEEN 1TO50 the prime numbers are 1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47 i.e, 16. probability is 16/50.

Which number is both prime and composite number?

2. Is 6 a Prime Number or Composite Number? 6 is a composite number as it can be divided by more than 2 numbers except 1 and itself….Prime Numbers and Composite Numbers.

Prime Numbers	Composite Numbers
Prime numbers can be written as the product of two numbers	Composite numbers can be written as the product of two or more than two numbers

What is the sum of two composite numbers?

Let n be a number which is a sum of two numbers, and at least one is prime. This gives n=p+c, where p is the prime number and c is the composite number. Even composite number can be written as a product of primes. So I can say, n=p+pe11.

Is the sum of two composite numbers a composite number?

Both composite numbers are even. Then the sum is composite. The resultant number 14 is composite.

What is the probability that both numbers come up are even?

Probability of two different even numbers = Probability of both even * Probability of both different given they are both even. Probability of both even is 12×12=14. Given they are both even there are 3 possible even numbers: 2,4,6.

What is the probability that a number picked from 1 to 100 will be a prime number?

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97. Probability is given by, Therefore, the probability that a number selected at random from 1 to 100 is a prime number​ is 0.25.

What is the probability of the event that a number chosen from 1 to 30 is an even number?

∴n(A)=15,n(S)=30∴ the probability =1530×100\%=50\%.