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Question
What is the last digit of 5209?
What is the last digit of 5209?
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Solution
The correct option is B 5
Consider, 51=5, last digit is 5.
52=25, last digit is 5.
53=125, last digit is 5.
54=625, last digit is 5.
By observing the above pattern we can conclude that unit digit of a number with base ending with 5 is 5.
Hence, we get last digit in 5209 as 5.
5
Consider, 51=5, last digit is 5.
52=25, last digit is 5.
53=125, last digit is 5.
54=625, last digit is 5.
By observing the above pattern we can conclude that unit digit of a number with base ending with 5 is 5.
Hence, we get last digit in 5209 as 5.
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