Before Mount Everest was discovered, what was the highest mountain in the world?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

What is full of holes but still holds water?

Which number comes next in the number series?

2, 9, 30, 93, ?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Can you place three balls such that the equation shown in the picture holds true?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

81 x 9 = 801. What must you do to make the this equation true?

Replace the question mark in the picture below.