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

They are three errirs in this question. Can you find them?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

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

Find the number of squares in the below picture

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

I make two people out of one. What am I?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Solve the counting riddle by identifying the number of triangles in the given picture.