Update notebooks for which there are exercises in the QuARK#183

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llorracc wants to merge 5 commits intomainfrom Update-nbs-with-problems-and-solutions

+8,634-306

Commits on Feb 14, 2022

Commits on Feb 16, 2022

Updates to ND-GR and MMIVRH
llorracc
committed

Commits on Feb 18, 2022