If N = 1 + 11 + 111 + 1111 + … +111111111, then what - Exam Yatra

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SSC CGL Tier-2 19-February-2018 Maths
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If N = 1 + 11 + 111 + 1111 + … +111111111, then what is the sum of the digit's of N?

[SSC CGL Tier-2 19-February-2018 Maths]

A 45

B 18

C 36

D 5

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