I have branches, but no fruit, trunk or leaves. What am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Find the smallest sentence with all the English alphabet.

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?