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No. For an odd number, usually you would need to add at least three prime numbers.The Goldbach conjecture states that every EVEN number can be written as the sum of two prime numbers. This conjecture hasn't been proved or disproved so far, but many even numbers have been checked, and so far, it seems to be true.
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Continue Learning about Basic Math
Is every prime number a rational number?
Yes. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Is Every whole number greater then 1 can be written as the sum of two prime numbers?
true
What is every whole numbers greater than one is either a prime number or can be written as a product of a prime number in an unique way?
The Fundamental theorem of arithmetic.
What is the largest prime number that can be written as the sum of two prime numbers and the difference of two prime numbers?
5
Is every number in the nineties composite or prime what the correct?
The only prime number in the 90s is 97. So out of ten numbers one is a prime number and the remaining nine numbers are composite numbers. So 90s comprises of both prime numbers and composite numbers.
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