Holmes solves it easily...Can u??

During quite periods Sherlock Holmes always became restless. It was at these times that Doctor Watson tried to have a mental problem prepared for the great detective to solve. 'My nephew presented me with this problem,Holmes, said Watson.'Can you identify the next number in the following sequence of numbers: 1 3 2 6 1 1 5 7 2 4 2 8 3 3 4?'
Holmes solved the problem withput much energy. Can you dind out the answer? 

Mrs Hudson beats Holmes

Sherlock Holmes,  Doctor Watson and Mrs Hudson were all having a friendly game of cards in the study off 221b Baker Street.The stakes were npthing more than matches, but nevertheless,  it turned out to be Mrs. Hudson's night. She finished the evening with twice as manyatches as Holmes, while holmes ended up with three times as many as Watson. If the total number of matches are ninety - how many matches did they each won? 

3. A Locked Door

You have 100 bags of coins each with 100 coins, but only one of these bags has gold coins. The gold coin weighs 1.01 ounce and the other coins weighs 1 ounce. You also have a scale, but can only use it once. How can you identify the bag of gold coins?

 This should interest you.