A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

Can you divide the below-given shape into four equal and identical pieces?

You can hear me, but you can't touch or see me.

What am I?

Find the next number in the series.
1 10 24 43 67 ?

My location can be determined by the below rebus.
So where am i ?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

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

Which tank will fill first?