A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were fishes.
Can you find out how many of each animals were present in that pet show?
one dog, one cat and one fish
Just muse at the statements with more concentration. All except two were dogs and all except two were cats. Thus we can fairly assume that two animals were not dogs and two were not cats. Now one of that animal that is not dog can be a cat. Similarly one of that animal that is not a cat can be a dog. If we combine this result with the fact that all except two of the pets were fish, we can come up with the result that in that pet show that day, there was one dog, one cat and one fish.