7 + 77 + 777 + ... up to 23 terms (the 23rd term consists of 23 sevens). What…
TCS · 2026
7 + 77 + 777 + ... up to 23 terms (the 23rd term consists of 23 sevens). What are the last 3 digits of the sum?
- A.
432
- B.
410
- C.
401
- D.
732
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