You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

In the given picture, in how many ways can you read the word "Tiger"?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

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?

What number do you get when you multiply all of the numbers on a telephone's number pad?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

What does this rebus riddle means ?