What four weights can be used to balance from 1 to 30 pounds?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

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?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

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?

Count the Triangle in the figure given below:

Can you write down eight eights so that they add up to one thousand?