diff --git a/2-js-basics/1-data-types/.github/pre-lecture-quiz.md b/2-js-basics/1-data-types/.github/pre-lecture-quiz.md
index 83746f63..ae385a38 100644
--- a/2-js-basics/1-data-types/.github/pre-lecture-quiz.md
+++ b/2-js-basics/1-data-types/.github/pre-lecture-quiz.md
@@ -2,16 +2,16 @@
 
 1. Booleans are a data type you can use to test the length of a string
 
-- [ ] true
+- [x] true
 - [ ] false
 
 1. The following is an operation you can perform on a string
 
-- [ ] concatenation
+- [x] concatenation
 - [ ] appending
 - [ ] splicing
 
 3. `==` and `===` are interchangeable
    
 - [ ] true
-- [ ] false
\ No newline at end of file
+- [x] false