Which Travels Faster? Solve below famous picture riddle:

If it took eight men ten hours to build a wall, how long would it take four men to build it?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

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

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?