In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

In which direction should the missing arrow point?

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

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Find the last number in the series below:

voN luJ yaM raM ---

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?