What Deficiency does the below rebus represent?

VIT_MIN

Prove that twice of ten is the same as twice of eleven.

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Can you find the key in the picture below?

I add 5 to 9 and get 2. The answer is correct, so what am I?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

How many triangles are there in the picture below?

The answer I give is yes, but what I mean is no. What was the question?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?