P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

If a wheel has 54 spokes, how many spaces are there between the spokes?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What makes this number unique: 8,549,176,320?

If six children and two dogs were under an umbrella, how come none of them got wet?

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

How many triangles can you count in the figure given?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Solve the equation in the image by looking at the pattern closely.

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.