IPMAT Rohtak 2020 (QA) PYQs

Five racquets needs to be placed in three boxes. Each box can hold all the five racquets. In how many ways can the racquets be placed in the boxes so that no box can be empty if all racquets are different but all boxes are identical?

How many signposts can be made using 6 different coloured symbols when any number of them can be posted at a time?

Out of 13 objects, 4 are indistinguishable and the rest are distinct. The number of ways we can choose 4 objects out of 13 objects is __________.