Prepin
Log in

Which is larger: "log(120)" or the sum "log(1) + log(2) + log(3) + log(4) + log(5)"?

Approach / Explanation

This question tests your understanding of logarithmic properties, particularly the product rule. This rule states that the logarithm of a product of numbers equals the sum of the logarithms of those numbers. In mathematical terms: log(a*b) = log(a) + log(b) You are tasked with comparing 'log(120)' to 'log(1) + log(2) + log(3) + log(4) + log(5)' to determine which expression has a greater value.

Suggested Answer

The logarithmic value of any positive number, except for 1, is either above or below 0. However, log(1) is equal to 0. In the second expression, we see log(1), which is 0, along with the logs of other numbers (2, 3, 4, and 5). Using the product rule of logarithms, we can combine these logarithmic values: log(1) + log(2) + log(3) + log(4) + log(5) = log(1 2 3 4 5) = log(120). Thus, the two expressions 'log(120)' and 'log(1) + log(2) + log(3) + log(4) + log(5)' are equivalent.

Alternative Answer

The law of logarithms permits us to express the sum of logarithms as the logarithm of their product, which greatly simplifies the problem. Rather than attempting to solve each logarithmic function individually, we can merge them: log(1) + log(2) + log(3) + log(4) + log(5) can be rewritten as log(1 × 2 × 3 × 4 × 5). This results in log(120), which is equivalent to the original expression. Therefore, they are indeed equal; neither expression is greater than the other.

Question Details

Difficulty & Category

Medium
statistics

Product

AI Candidate AgentCompaniesBrowse JobsInterview QuestionsDeep ProfileSkill AssessmentOpportunity Matching
Prepin.ai

© 2026 Prepin | All rights reserved.