Solution

The correct  answer is option 4.

Solution :

In the warehouse , No. of aisles = 50

Horizontal locations in each aisle = 85

No. of shelves =5

Therefore, total number of bins =  50 *  85 * 5 = 21250

According to the pigeonhole principle, if there are N+1 pigeon then there must be N pigeonholes, such that at least  two pigeons are in same pigeonholes.

Here, N = 21250,therefore number of products = 21250+1 =21251 so that at least two products are in the same bin.