# looper quiz answers Learn how to create a series of numbers with a for loop. This is the answer key for the [looper quiz](/lessons/looper/quiz). ## 1. What is a for loop? Answers will vary. In general, for loop refers to the code that repeats for a fixed number of times. We specify the LED using x, y coordinates. ## 2. Consider the following code ```blocks for (let i = 0; i < 4; i++) { basic.showNumber(i, 150) } ``` If the rectangle below represents the @boardname@, shade the areas that will be displayed. Explain why that particular area is shaded. Let's create a for loop where `0` is the loop's starting value, `i` is the index variable, and `4` is the ending value. The index variable `i` starts at 0 and increases by 1 each time through the loop. The loop ends when `i = 4`.  ## 3. Consider the following code ```blocks for (let i1 = 0; i1 < 6; i1++) { basic.showNumber(i1, 150) } ``` If the rectangle below represents the @boardname@, shade the areas that will be displayed. Explain why that particular area is shaded. Let's create a for loop where `0` is the loop's starting value, `i` is the index variable, and `6` is the ending value. The index variable `i` starts at 0 and increases by 1 each time through the loop. The loop ends when `i = 6`.  