What Deficiency does the below rebus represent?

VIT_MIN

What begins with T, ends with T, and has T in it?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

By using 'because' continuously three times, can you make an English statement ?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

how come the second man dies?