What Deficiency does the below rebus represent?

VIT_MIN

What does this simple rebus mean?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

I look at you, you look at me I raise my right, you raise your left. What am I?

What word does this rebus represent?

meta meta
meta meta

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?