Why 1729 is a magic number? Answer Logically.

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

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?

Before Mount Everest was discovered, what was the highest mountain in the world?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Can you count the number of triangles in the picture below?

Who always enjoys poor health?

Can you identify if it's a murder or a suicide ?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?