Counterexamples
Mathematics
9th - 12th Grade
CCSS covered
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If a playing card from a standard deck is red, then it is a heart.
a spade
a diamond
a heart
a club
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If a number is a fraction, then it can be written as a terminating decimal.
1
4/5
2/3
1/2
Tags
CCSS.7.NS.A.2D
CCSS.8.NS.A.1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If a vehicle has four wheels, then it is a truck.
a scooter
a car
a bicyle
a motorcyle
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If the number even, then it is not prime.
2
9
20
4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If a fraction has a numerator of 2, then the fraction can be reduced.
2/4
2/5
2/30
2/6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If the sum of two numbers is even, then those numbers are both odd.
3 and 6
6 and 5
4 and 2
3 and 5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a counterexample for this conditional statement:
If a pet is small, then it is a kitten.
a pony
a frog
a kitten
a golden retriever
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