Lesson 6: Writing Equations from Patterns
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Journal Prompt
Patterns: 7^1=7, 7^2=49, 7^3=343, and so forth. When multiplied out, 7^2 has a units digit of 9, 7^3 has a units digit of 3, and so forth. What is the units digit of 7^20? Explain your answer by analyzing the pattern.
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