The bin for a score on an edge

The code counts 10 exam scores in bins that are 10 points wide, starting at 50. Predict the two lines of output without running the code.

Code

import numpy as np

scores = [45, 58, 60, 65, 70, 70, 79, 80, 88, 90]
edges = [50, 60, 70, 80, 90]

counts, _ = np.histogram(scores, bins=edges)
print(counts.tolist())
print(int(counts.sum()), len(scores))