what does the below math rebus puzzle mean?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

What Deficiency does the below rebus represent?

VIT_MIN

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Can you count the number of squares in the figure below?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Do you know who was buried in John's tomb?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?