A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

How far can you walk into the woods?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

If your uncle’s sister is not your aunt, what relation is she to you?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?

How many triangles are there on the puzzle below?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

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?

I am white when I am dirty, and black when I am clean. What am I?