Question 8
LogarithmsWithout using tables, evaluate log2 4 + log42 − log255
- A.1/2
- B.1/5
- C.0
- D.5
- E.2.
Show the answer and explanation
Answer: E (2.)
Explanation
log₂4 = 2, log₄2 = ½ (since √4 = 2) and log₂₅5 = ½. So 2 + ½ − ½ = 2.
Without using tables, evaluate log2 4 + log42 − log255
Answer: E (2.)
log₂4 = 2, log₄2 = ½ (since √4 = 2) and log₂₅5 = ½. So 2 + ½ − ½ = 2.