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

If 21x = 79x, what is the value of x?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

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

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

Can you replace the question mark with the correct number?

What runs around the whole yard without moving?