Question

If log2=0.3010 and log 3=0.4771 find the value of log 20

Answer 1

Answer:

log 25= log 5 + log 5

→ log (10/2) + log (10/2)

→ (log 10-log 2) +(log 10-log2)

→ (1-0.3010) + (1-0.3010)

→ 0.6990 + 0.6990

→ 1.3980 answer