2
x = 2 : 2 and 3 are both primes.
a number wich disproves a proposition For example, theprime number 2 is a counterexample to the statement "All prime numbers are odd."
a number wich disproves a proposition For example, theprime number 2 is a counterexample to the statement "All prime numbers are odd."
There is no counterexample because the set of whole numbers is closed under addition (and subtraction).
One possible conjecture is that each square number up to 1000 has 4 factors. The conjecture is manifestly false, but it is still a conjecture.
A+
x = 2 : 2 and 3 are both primes.
a number wich disproves a proposition For example, theprime number 2 is a counterexample to the statement "All prime numbers are odd."
a number wich disproves a proposition For example, theprime number 2 is a counterexample to the statement "All prime numbers are odd."
The number 2 is even as well as prime.
There is no counterexample because the set of whole numbers is closed under addition (and subtraction).
You are an Idiot dude. there is no such value
4 is divisible by 2 but not by 6
Perhaps. Computers have shown that it is true for some pretty large numbers, but you need to remember that there are an infinite number more out there. It hasn't been proved true yet, nor has there been a counterexample. Of course, theoretically the conjecture could be true, yet unprovable (see Godel's Incompleteness Theorem)
2 is a prime number.
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One possible conjecture is that each square number up to 1000 has 4 factors. The conjecture is manifestly false, but it is still a conjecture.