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The question for numpy operations requires [0, 1, 2, 3, 4] as the answer, which is incorrect. a + 20 produces [20, 21, 22, 23, 24].

Possible Solutions:
1. Modify the first available answer from [20, 21, 22, 24, 24] to [20, 21, 22, 23, 24]
2. Add an additional option with the correct answer.

According to NumPy's glossary, the row axis is 0, and the column axis is 1. Therefore, the answer of
Given the X NumPy matrix, show the sum of its columns should be
X.sum(axis=1) not X.sum(axis=0)
One can try to add the columns to check, the answer is the result of X.sum(axis=1)
Although the answer for the next problem is correct (it does compute the mean values of the elements of X's row), the given comment is still incorrect (# remember: axis=0 columns; axis=1 rows)

There is nothing in the file. Please remove freecodecamp-intro-to-numpy/untitled.txt

In '3. NumPy exercises.ipynb' under Logic functions, the example for any is incorrect: X.any returns True even if there are no zeros.

Since the fix depends on the intent/goal of the question, there are different ways of fixing it, for example:

1. Keeping the question identical and changing the answer:

# Given the X numpy array, return True if any of its elements is zero
X = np.array([-1, 2, 0, -4, 5, 6, 0, 0, -9, 10])
np.any(X==0)

2. Keeping the answer identical and changing the question:

# Given the X numpy array, return True if any of its elements is true
X = np.array([-1, 2, 0, -4, 5, 6, 0, 0, -9, 10])
X.any()