Is each biconditional statement true or false?

Select True or False for each statement.

1. A number is a multiple of 3 if and only if the number is odd. True or False

2. A number is even if and only if the number is divisible by 2. True or False

3. A number is divisible by 5 if and only if the number has a 0 or a 5 in the ones place. True or False

4. A number is prime if and only if the number is not a multiple of 4. True or False

Question

Mathematics

Areli

7 September, 19:36

Is each biconditional statement true or false?

Select True or False for each statement.

1. A number is a multiple of 3 if and only if the number is odd. True or False

2. A number is even if and only if the number is divisible by 2. True or False

3. A number is divisible by 5 if and only if the number has a 0 or a 5 in the ones place. True or False

4. A number is prime if and only if the number is not a multiple of 4. True or False

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Answers (1)

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Halle Schwartz · Answer 1

1. False. A number is divisible by 3 if the sum of its digits is divisible by 3.

2. True

3. True.

4. False. A number is prime if its only factors are 1 and itself.