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

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Can you decipher the below rebus?

PBLUESAISNUERSES

I have an eye but still cannot see.

Who am I?

Count the number of triangles in the below picture?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?