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

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Count the number of triangles in the picture below:

What is the fastest way to double your money?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

Decode the movie name from the below picture?