Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

Find the number of squares in the below-given picture.

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

I have eight fingers and two thumbs but I do not live. What Am I?

What is wrong in the below Picture?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

Which Number is the odd one out?

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

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What phrase is represented by the Rebus