Problem : Evaluate log69 + log64.

2.

Problem : Evaluate log34 - log3324.

-4.

Problem : Evaluate 3 log210 + log23 - log215 - 2 log25.

3.

Problem : Evaluate log4167.

14.

Problem : Evaluate log108 - 2 log2.

-3.

Problem : Evaluate 2 log515 - 2 log53.

2.

Problem : Evaluate log414 - log4126 + 2 log43.

0.