Three people check into a hotel. They pay #30,000 to the receptionist and go to their room. The receptionist suddenly remembers that the room rate is #25,000 and gives #5,000 to the cleaner to return to the people. On the way to the room, the cleaner reasons that #5,000 would be difficult to share among three people so he decides to pocket #2,000 and gives #1,000 to each person. Now each person had paid #10,000 and got back #1,000. So they paid #9,000 each, totalling #27,000. The cleaner has #2,000, totalling #29,000. So Where is the missing #1,000?

The 1000 was lost in the way the question was being asked. They all paid 10k each and getting 1k back so ended up paying 9k each. Total paid 27k. 25k for the roon and the remaining 2k in the pockets of the greedy cleaner.

The 1000 got missing through approximation.
initial 30k for 3= 10k per person

25k for 3= 8333.3 per person, which is 24999.9 for 3
3k by cleaner= Ik per person which is 3000 for 3
cleaner's 2k
Therefore, 24999.9+ 3000+2000=29999.9