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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

100 in base 10 = 100 in base 10 in base 9 = 81 + 18 + 1 = 121 in base 8 = 64 + 32 + 4 = 144 in base 7 = 98 + 0 + 2 = 202 in base 6 = 72 + 24 + 4 = 244 in base 5 = 400 in base 4 = 4³ + 2×4² + 4 + 0 = 64 + 32 + 4 + 0 = 1210