When it's bad luck to meet a black cat?

Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

Spot what is wrong here in below Picture?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

You need to arrange three 7 and mathematical symbols to form number 1?

Can you start the fire using two pieces of wood?

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

who is silent in the parliament?

Find the missing number in the image below.