IF AN ELECTRIC TRAIN IS GOING EAST AT 60 MILES AN HOUR AN THERE IS A STRONG WESTERLY WIND WH RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A chalkboard. Did you answer this riddle correctly?
YES  NO  

Let the hourglass with 7 minutes timeframe be x and the hourglass with 11 minutes timeframe be y.
Turn x and y together.
After seven minutes, turn x.
After 11 minutes, turn x again.
Now it will take 4 minutes for x to stop.
At that moment, you would have calculated 15 minutes. Did you answer this riddle correctly?
YES  NO  

On a chessboard Did you answer this riddle correctly?
YES  NO  

A golf Ball Did you answer this riddle correctly?
YES  NO  

An egg Did you answer this riddle correctly?
YES  NO  

A river Did you answer this riddle correctly?
YES  NO  

Microsoft Did you answer this riddle correctly?
YES  NO  

Teeth. Did you answer this riddle correctly?
YES  NO  

At the beginning, it was said that "It was a hot and windless day," yet at the end, it is said that "The flag was waving back and forth". Had it been windless, the flag would have been limp. Did you answer this riddle correctly?
YES  NO  

A spiral staircase. Did you answer this riddle correctly?
YES  NO  

Uncle Sam falling down the steps! Did you answer this riddle correctly?
YES  NO  

Boat Did you answer this riddle correctly?
YES  NO  

A parking lot. Did you answer this riddle correctly?
YES  NO  

Dont use that tone with me. Did you answer this riddle correctly?
YES  NO  

Bike Did you answer this riddle correctly?
YES  NO