Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?