Cognitive Reflection Test (CRT) Practice 2025 - Free Cognitive Reflection Test Practice Questions and Study Guide

Question: 1 / 400

What is the sum of the first five positive integers?

10

15

To find the sum of the first five positive integers, you simply add them together: 1 + 2 + 3 + 4 + 5.

Calculating this step by step:

- Start with 1 + 2, which equals 3.

- Next, add 3 + 3, resulting in 6.

- Then, add 6 + 4, giving you 10.

- Finally, add 10 + 5, which equals 15.

Therefore, the sum of the first five positive integers is 15, making this answer the correct one. This approach of sequential addition confirms that no values were overlooked, ensuring accuracy in the calculation.

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