Solve it please

Solve it please Number of digits in integral part of 6012 + 60-12 — 60-15 is ( (B) 21 (A) 20 (CY22

Dear studentas 60-12 and 60-15  will no have integral part so we can remove them and now by taking log in the base of 10log106012=12log1060=12×1.778=21.336now number of digits will be =21+1hence ans is =22regards

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