Yoko is studying the growth of a particular type of plant. She is testing the effects of four growth factors: lighting, age, temperature, and humidity. Here are the levels she's testing for each. Growth factor Levels Lighting None, Low, Medium, High, Very high Age 1 month, 2 months, 3 months, 4 months, 5 months, 6 months Temperature 20 °C, 22 °C Humidity Low, Medium, High She wants to find the number of ways of combining one level from each of the growth factors. How many ways are there?

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Yoko is studying the growth of a particular type of plant. She is testing the effects of four growth factors: lighting, age, temperature, and humidity. Here are the
levels she's testing for each.
Growth factor
Levels
Lighting
None, Low, Medium, High, Very high
Age
1 month, 2 months, 3 months, 4 months, 5 months, 6 months
Temperature 20 °C, 22 °C
Humidity
Low, Medium, High
She wants to find the number of ways of combining one level from each of the growth factors. How many ways are there?
Transcribed Image Text:Yoko is studying the growth of a particular type of plant. She is testing the effects of four growth factors: lighting, age, temperature, and humidity. Here are the levels she's testing for each. Growth factor Levels Lighting None, Low, Medium, High, Very high Age 1 month, 2 months, 3 months, 4 months, 5 months, 6 months Temperature 20 °C, 22 °C Humidity Low, Medium, High She wants to find the number of ways of combining one level from each of the growth factors. How many ways are there?
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