Can you count the number of quadrilaterals in the picture below?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Which Travels Faster? Solve below famous picture riddle:

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

Find the next number in the sequence

5 12 24 36 ?

Count the number of triangles in the picture below:

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

What can you deduce from the following BrainBat?

CRY
LMKI

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?