Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Solve this riddle by finding the odd one out from the rest.

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

Can you make four (4) nines (9) equal 100?

I have Rs.50 and I spend it in the way as below.

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

In the picture given below, can you find out which digit will take place of the question mark?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91