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

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

What time is it when an elephant sits on a fence?

What do you call a fish without an eye?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

What is the largest number you can write with just 3 digits?