what does the below rebus means?

I can be cracked, made, told, and played. What am I?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Looking at the figure given, you will find a square formed with match sticks. This figure comprises five squares. Can you move the matchsticks such that the resulting figure consists of ten squares? Please note that you can drag the matchsticks can't rotate them and have just four moves. How will you do it?

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?

What does this Rebus Picture mean?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

What is more useful when it is broken?

Can you count the number of triangles in the picture below?