5

Algebra Level 1

5+55+555+5555+.............................1000th term. What is the units place of the sum.


The answer is 0.

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1 solution

If we add 5, the units always be 0 or 5.

Instead of this problem try this one https://brilliant.org/problems/a-good-problem-for-jee/?group=QR2n7JT3iyVU

Tanishq Varshney - 6 years, 4 months ago

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