What Deficiency does the below rebus represent?

VIT_MIN

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

Can you divide the below-given shape into four equal and identical pieces?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Can you make a six-letter word using the letters N, A and B ?

Identify the 10 differences between the two given pictures.