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Type: Open-Ended
Category: Exponents
Level: Grade 9
Tags: Indices
Author: Melvin_Perera
Last Modified: 7 years ago

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Exponents Question

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Grade 9 Exponents

$7^2 = 49$ . The unit digit is 9.
Without using a calculator, work out the unit digit of

$7^10$ . Explain how you did this.