Answer:
1. Binary Search tree is created in word file and attached below.
2. In order Traversal
order is followed as
1. visit Left
2.visit root
3. visit right
so the answer is
3, 12, 14, 15, 21, 35, 42
3. Pre order Traversal
order is followed as
1. visit root
2.visit left
3. visit right
so the answer is
12, 3, 15, 14, 35, 21, 42
4. Post order Traversal
order is followed as
1. visit left
2.visit right
3. visit root
so the answer is
3, 14, 21, 42, 35, 15, 12