Association problems fall under the unsupervised learning algorithms and here we can make use of the a priori algorithm to do this so here what you have to do is basically if and find association between different items so if a person bought bread and butter together it means that there is an association between these two items so in this problem you just going to find the association between different items and you're going to make use of the unsupervised learning algorithm cause the a priori algorithm so guys