What has a ring but no finger?

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?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?

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?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What four weights can be used to balance from 1 to 30 pounds?

I don't get anymore wetter, no matter how much rain falls on me.

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?