I’m tall when I’m young, and I’m short when I’m old. What am I?

Move three sticks of the spiral below to form a square.

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Which word does the below Plexor means ?

Can you start the fire using two pieces of wood?