Trees - General Questions

A full binary tree (every node has 0 or 2 children) has 24 internal nodes. How many leaves does it have?

What is the minimum possible height of a binary tree with 78 nodes (a single node has height 1)?

What is the minimum possible height of a binary tree with 88 nodes (a single node has height 1)?

A full binary tree (every node has 0 or 2 children) has 48 internal nodes. How many leaves does it have?

What is the minimum possible height of a binary tree with 53 nodes (a single node has height 1)?