How many triangles are there on the puzzle below?

Can you count the number of triangles in the given figure?

Prove that twice of ten is the same as twice of eleven.

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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

People make me, save me, change me, raise me. What am I?

Remove two matchsticks to make the below equation correct.

How many triangles can you find in this given picture?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes