The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

What has many keys but can’t open a single lock?

Do you know who was buried in John's tomb?

I am white when I am dirty, and black when I am clean. What am I?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Why is the Hole below a Lock?