multiline pre in numpy questions

curriculum/challenges/english/08-data-analysis-with-python/numpy/basics-of-numpy.md

@@ -18,25 +18,25 @@ print(b)
 
 ## --answers--
 
-```python
+<pre>
 [[1.0 2.0 3.0]
 [3.0 4.0 5.0]]
-```
+</pre>
 
 ---
 
-```python
+<pre>
 [[1. 2. 3.]
 [3. 4. 5.]]
-```
+</pre>
 
 ---
 
-```python
+<pre>
 [[1. 3.]
 [2. 4.]
 [3. 5.]
-```
+</pre>
 
 ## --video-solution--
 

curriculum/challenges/english/08-data-analysis-with-python/numpy/initialize-array-problem.md

@@ -11,7 +11,7 @@ videoId: 0jGfH8BPfOk
 
 What is another way to produce the following array?
 
-```py
+<pre>
 [[0. 0. 0. 0. 0. 0. 0.]
 [0. 1. 1. 1. 1. 1. 0.]
 [0. 1. 1. 1. 1. 1. 0.]
@@ -19,7 +19,7 @@ What is another way to produce the following array?
 [0. 1. 1. 1. 1. 1. 0.]
 [0. 1. 1. 1. 1. 1. 0.]
 [0. 0. 0. 0. 0. 0. 0.]]
-```
+</pre>
 
 ## --answers--
 

curriculum/challenges/english/08-data-analysis-with-python/numpy/initializing-different-arrays.md

@@ -19,23 +19,23 @@ print(np.full_like(a, 100))
 
 ## --answers--
 
-```py
+<pre>
 [[100 100 100 100 100]]
-```
+</pre>
 
 ---
 
-```py
+<pre>
 [[100 100 100 100 100]
 [100 100 100 100 100]]
-```
+</pre>
 
 ---
 
-```py
+<pre>
 [[ 1  2  3  4  5]
 [ 6  7 20  9 10]]
-```
+</pre>
 
 ## --video-solution--
 

curriculum/challenges/english/08-data-analysis-with-python/numpy/loading-data-and-advanced-indexing.md

@@ -11,16 +11,16 @@ videoId: tUdBZ7pF8Jg
 
 Given a file named `data.txt` with these contents:
 
-```
+<pre>
 29,97,32,100,45
 15,88,5,75,22
-```
+</pre>
 
 What code would produce the following array?
 
-```py
+<pre>
 [29. 32. 45. 15.  5. 22.]
-```
+</pre>
 
 ## --answers--
 

curriculum/challenges/english/08-data-analysis-with-python/numpy/reorganizing-arrays.md

@@ -11,12 +11,12 @@ videoId: VNWAQbEM-C8
 
 What code would produce the following array?
 
-```py
+<pre>
 [[1. 1.]
 [1. 1.]
 [1. 1.]
 [1. 1.]]
-```
+</pre>
 
 ## --answers--