Mymensingh higher secondary 2015 #8
Posted: Sun Feb 17, 2019 10:43 pm
In a parallel math club there are five boys and nine girls. Once the club trainer wanted to take a photo of all the members standing in a row. He told that boys will stand according to their height in decreasing order from left to right and girls will stand according to their height in increasing order from left to right. Assuming that everyone’s height is different, how many ways they can stand?