8,10,12,15,18,19,20,21,22,23,24,25,26,27,30,36,38,40,42,45,48 wich number have 3 as a factors ?
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12,15,18,21,24,27,30,3642,45,48
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Answer:
12, 15, 18, 21, 24, 27, 30, 36, 42, 45 and 48
Step-by-step explanation:
To test the divisibility of a number by 3, we can try to add the digits of that number. If the resulted sum is a multiple of 3, then the number is a divisible by 3, means 3 is it's factor.
For example, 12 =>2+1
=> 3
Since 3 is a multiple of 3, therefore, 12 is a multiple of 3.
Similarly, 15, 18, 21, 24, 27, 30, 36, 42, 45 and 48 are the multiples of 3. While the others are not.
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