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Are the multiples of an even numbers always even?
NO. When a number is odd, not all of its multiples are odd.Example: 3 is an odd number.Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24,...Multiples of 3 which are not odd: 6, 12, 18, 24, ...
All multiples of odd natural number can be written as the sum of consecutive natural numbers?
No. Odd numbers can be written as the sum of consecutive integers, but some multiples of odd numbers are even.
How many multiples of 9 are odd numbers?
9 multiplied by any other odd number will still be odd. 9 multiplied by any even number will be even - so the multiples of 9 between 1 and 120 that are odd would be:1x9 = 93x9 = 275x9 = 457x9 = 639x9 = 8111x9 = 9913x9 =117The next odd number you could multiply 9 by is 15 but 15x9 = 135, which is greater than 120 so does not fall within the constraints of the question.
Is the gcf of a odd number and an even number always even?
The GCF of an odd and even number is never even.
Odd number plus an odd number?
Addition of two odd numbers will always give an even number.
