Question

Find log 10 + log 1 = ?
1. 3
2. 2
3. 1
4. 0

Answer 1

Correct Answer - Option 3 : 1

Concept:

Log_ab = c

⇒ a^c = b

Calculation:

If no base is written, then the base is 10

In log₁₀10

 a = 10, b = 10

⇒ 10^c = 10¹

⇒ c = 1

⇒ log₁₀10 = 1

In log₁₀1

a = 10, b = 1

⇒ 10^c = 1

⇒ 10^c = 10⁰

⇒ c = 0

⇒ log101 = 0

⇒ log 10 + log 1 = 1 + 0

⇒ 1

∴ The value of log 10 + log 1 is 1