Probability: Certain vs. Impossible

If the probability of an event happening is 0%, we say the event is "impossible."

If the probability of an event happening is 100%, we say the event is "certain."

The blue arrow shows an event with a probability of 0%. Is this event impossible or certain?

• Impossible

• Certain

Tags

CCSS.7.SP.C.5

If the probability of an event happening is 0%, we say the event is "impossible."

If the probability of an event happening is 100%, we say the event is "certain."

The blue arrow shows an event with a probability of 100%. Is this event impossible or certain?

• Impossible

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Certain: 100% probability

The probability of an event happening is 100%. Is this event impossible or certain?

• Impossible

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Certain: 100% probability

The probability of an event happening is 0%. Is this event impossible or certain?

• Impossible

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Unlikely: Between 0 and 50%

Likely: Between 50 and 100%

Certain: 100% probability

The probability of an event happening is 22%.

How can you describe the probability?

• Impossible

• Unlikely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Unlikely: Between 0 and 50%

Likely: Between 50 and 100%

Certain: 100% probability

The probability of an event happening is 65%.

How can you describe the probability?

• Impossible

• Unlikely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Unlikely: Between 0 and 50%

Likely: Between 50 and 100%

Certain: 100% probability

The probability of an event happening is 46%.

How can you describe the probability?

• Impossible

• Unlikely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Unlikely: Between 0 and 50%

Likely: Between 50 and 100%

Certain: 100% probability

The probability of an event happening is 0%.

How can you describe the probability?

• Impossible

• Unlikely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Unlikely: Between 0 and 50%

Likely: Between 50 and 100%

Certain: 100% probability

The probability of an event happening is 52%.

How can you describe the probability?

• Impossible

• Unlikely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Impossible: 0% probability

Unlikely: Between 0 and 50%

Likely: Between 50 and 100%

Certain: 100% probability

The probability of an event happening is 100%.

How can you describe the probability?

• Impossible

• Unlikely

• Likely

• Certain

Tags

CCSS.7.SP.C.5