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

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

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

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What do you see in the image below

Can you divide the below-given shape into four equal and identical pieces?

When 99 is considered higher than 100?