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

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Which English verb becomes past tense just by rearranging the letters?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

Which number comes next in the number series?

2, 9, 30, 93, ?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?