What odd number can have even factors? None. Any number, odd or even, multiplied by an even number will be even.
Can two odd numbers have an even product?
Odd numbers have the digits 1, 3, 5, 7 or 9 in their ones place. The sum of two odd numbers is always even. The product of two or more odd numbers is always odd.
How do you always get an odd number?
Correct answer: Thus, n + 1 and m + 1 are both odd. When two odd numbers are multiplied together, the result is always an odd number. Thus (n + 1)(m + 1) must be an odd number. Because n and m are even, when we multiply two even numbers together, we always get an even number.
Is the GCF of an even number always odd?
No. The opposite is true: the gcf of an odd number and an even number is always odd. All the factors of an odd number are odd; or to put it another way: If a number has an even factor, the number itself must be even. Thus the only common factors between odd and even numbers must be odd.
Can a odd number be a factor of an even number?
Therefore no positive odd number has any even factors. Every factor of an odd number is odd. Obviously then, the common factors of an even number and an odd number are all odd. So the HCF of an even number and an odd number is always odd.
How do you calculate the greatest common factor?
Given two whole numbers, subtract the smaller number from the larger number and note the result. Repeat the process subtracting the smaller number from the result until the result is smaller than the original small number. Use the original small number as the new larger number. Subtract the result from Step 2 from the new larger number.
Is the number 25 a prime or odd number?
For example, the number 25 has three factors: Because 25 is a square number it has an odd number of factors. A prime number is a number which is only divisible by 1 and itself. Prime numbers cannot be divided by another number to leave a whole number. The number 1 only has one factor (itself); therefore, 1 is not a prime number.
