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In base 5, the landmark numbers are 1, 5, 25, 125, … What is the next landmark number after 125?

Class 8Number Bases and Old Numeral SystemsNumber System

A500
B625
C250
D150

Step-by-Step Solution

Each landmark is 5 times the previous one:

5^{0} = 1, 5^{1} = 5, 5^{2} = 25, 5^{3} = 125, 5^{4} = 625

.

Answer: B) 625

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