odd multiples of 7 are odd numbers.. like 7*1, 7*3,7*5..
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Starting with 7, every other multiple is odd.
No, try 14.
There are an infinite number of odd numbers that are divisible by 7. You can calculate an infinite number of odd numbers that are divisible by 7 by multiplying 7 by odd numbers. There are an infinite number of odd numbers. 7 x 1 = 7 7 x 3 = 21 7 x 5 = 3 7 x 7 = 49 7 x 9 = 63 7 x 11 = 77 7 x 13 = 91 7 x 15 = 105 7 x 17 = 119
You cannot have 7 odd numbers that will sum to 30.
In the same way that and odd plus and even is always odd. For example, 7*3 = (7+7) odd + odd = even , then add +7, apply rule that odd + even = odd and get that it equals 21.