What is the next number in the series?

15 29 56 108 208 ?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What kind of band never plays music?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

Buy me, smell me or deliver me, I do not change.

Who am I?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

What is harder to catch the faster you run?

Why is a river so rich ?