What is the next number in the series?

15 29 56 108 208 ?

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

What does the below rebus puzzle mean?

What goes through cities and fields, but never moves?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

Can you find out the total number of triangles in the given figure?

What Deficiency does the below rebus represent?

VIT_MIN

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?