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Earn +20 ptsQ: Is 2 x 3 x 5 x 7 plus 5 a prime number?
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What is prime number plus prime number?
It is may be prime only if one term is 2. for example: 3+2=5But one term may be 2 and the result composite: 7+2=9=3*3
Student conjecture that if x is a prime number then x plus 1 is not prime. Which of the following answer is a counterexample?
x = 2 : 2 and 3 are both primes.
What is the counterexample of the sum of 2 different prime numbers is even?
2 + 3 = 5 Two plus any odd prime number is odd.
Is 216 a prime number or a composite number?
216 is not prime. 216 = 2 * 2 * 2 * 3 * 3 * 3
2 and 3 can consecutive whole number prime number?
Yes, 2 and 3 are consecutive prime numbers.
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