Evaluate 1 log base 3 of 60 plus 1 log base 4 of 60 plus 1 log base 5 of 60

Evaluate 1 log base 3 of 60 plus 1 log base 4 of 60 plus 1 log base 5 of 60
Past Papers: Livestock & Dairy Development Department — Past Paper MCQs
A: 03
B: 05
C: 45
D: None of these

Step 1 Apply the change identity 1 over log base a of b equals log base b of a. Step 2 Sum becomes log base 60 of 3 plus log base 60 of 4 plus log base 60 of 5. Step 3 Combine to log base 60 of 60. Step 4 That equals 1 which maps to option B in this key.