Question

Find a counterexample to show that each conjecture is false

Answer 1

Answer:

• Examples given below

Step-by-step explanation:

1. All vehicles on the highway have exactly four wheels

• Motorcycle

2. All states in the United states share a border with another state

• Hawaii

3. All plurals end with the letter s

• Children

4. The difference between two integers is always positive

• 3- 13 = -10 is negative

5. All pentagons have exactly five congruent side

• Irregular pentagon

6. All numbers that are divisible by 3 are also divisible by 6

• 9 is divisible by 3 but not divisible by 6

7. All whole numbers are greater than their opposites

• -5 < 5

8. All prime numbers are odd integers

• 2 is prime but even