Multiple choice

The total number of binary trees possible with three unlabelled nodes is

  1. 5

  2. 6

  3. 7

  4. 8

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Follow the following formula to calculate number of nodes.2nCn / (n+1) where n is the number of nodes.2*3C3 / (3+1)=5