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EXERCISE 3.5Which of the following statements are true?(a) If a number is divisible by 3, it must be divisible by 9. |
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Answer» falseFor the first part of your question, all numbers in the form of 3*(n + 1) and 3* (n + 2), where n >= 0 and integer and when n + 1 or n + 2 is not divisible by 9, are divisible by 3 but not by 9. There are no numbers that are integers that are divisible by 9 but not divisible by 3. Since 9 = 3 * 3, all integers divisible by 9 are also divisible by 3. |
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