diff --git a/Chapters/Ch02 - Data Parallel Computing/exercises/README.md b/Chapters/Ch02 - Data Parallel Computing/exercises/README.md
index 0c09ac6..49dc001 100644
--- a/Chapters/Ch02 - Data Parallel Computing/exercises/README.md	
+++ b/Chapters/Ch02 - Data Parallel Computing/exercises/README.md	
@@ -56,8 +56,8 @@ Each thread calculates 2 elements so the number of elements processed by the pre
 **Correct answer:** C
 
 ```
-ceil(8000/1024) = 4 blocks
-4 blocks * 1024 threads per blocks = 8192 threads 
+ceil(8000/1024) = 8 blocks
+8 blocks * 1024 threads per blocks = 8192 threads 
 ```
 
 ---
@@ -124,4 +124,4 @@ __host__ __device__ function_return_type function_name(...)
 {
     ...
 }
-```
\ No newline at end of file
+```