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

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

What number should come in place of the question mark below?

Why is the Hole below a Lock?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?