(37 # _ )
/ \
/ \
/ \
(21 # 29) (50 # 70 # 80)------------
/ | \ / \ \ |
/ | \ / \ \ |
(7,9,11) (21,23) (29,30) (37,49) (50,69) (70,75) (80,105)
No, this is not a B-Tree of order 3. Note that
there is a node with 4 children, which violates the
rule about nodes only having m children or less.