Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

If 21x = 79x, what is the value of x?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

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?

Can you find out the missing number in the grid?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

You can see three almost identical images below. Can you spot the odd one out from them?

Find the missing number in the image below.

What has 13 hearts but no other organs?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?