What Deficiency does the below rebus represent?

VIT_MIN

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What jumps when it walks and sits when it stands?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?