I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What is the next number in the series?

15 29 56 108 208 ?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1