How many triangles are there on the puzzle below?

Which Travels Faster? Solve below famous picture riddle:

How many words can a pen with half refill write?

It is always ahead of me yet I can never see it. What is it?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

There is something which you can be arrested for attempting but not for successfully completing.

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100