What Deficiency does the below rebus represent?

VIT_MIN

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

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

You can see it everyday, But cannot touch it at will. What is it?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

What does this simple rebus mean?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9