Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

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?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

Prove that twice of ten is the same as twice of eleven.

What is common among 11, 69, and 88?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Solve the mathematical equation in the picture below.

why number 8549176320 is one of a kind?