B Tree | B+ Tree | M-way search Tree | Multiway search tree

Data Structures and Algorithms: B Tree, B+ Tree, M-way search Tree
This video covers the representation of a B Tree, B+ Tree, M-way search Tree in detail.
Insert and delete operations on the B Tree are explained with proper examples.
Link for the more related videos:
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[@tusharchawla1440]

Mam I have one doubt
According to google, minmum number of keys for internal node is: ceil(n/2) -1
But according to you it will be n/2
Which approach should I follow?

[@tusharchawla1440]

Basically i am getting different answer in case when I have even value of n(order)

[@AnnepuVishal]

Mam b trees code