If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

What has 13 hearts but no other organs?

Can you decipher the below rebus?

PBLUESAISNUERSES

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

Using eight eights and addition only, can you make 1000?