Step-by-step explanation:
The total number of whiteboard markers is
The number of the overhead markers is
The number of watercolor markers is
The total number of markers are
The probability of 2 watercolors will be gotten below as
The probability of picking 1 white board marker and 1 overhead marker is gotten below as
The probability of picking 1 white board marker and 1 watercolor marker is gotten below as
The probability of picking two white board markers will be
Hence,
The final answer is