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How Many Cakes ?

Travel Forums Off Topic How Many Cakes ?

1. Posted by Wocca (Inactive 3745 posts) 11y

You are on your way to visit your Grandma, who lives at the end of the valley. It's her birthday, and you want to give her the cakes you've made.

Between your house and her house, you have to cross 7 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 with to make sure that you arrive at Grandma's with exactly 2 cakes?

2. Posted by Sam I Am (Admin 5588 posts) 11y

Hehe, good one.

My answer is 2, what's my prize? :)

Actually, I started with writing down a formula but then thought that was probably not the way to go about it... good thing too as my math is a bit rusty and I would have ended up with a very strange answer most likely!

Sam

3. Posted by lil j (Travel Guru 1303 posts) 11y

oh i have to be in the mood to do these things-i dont want to do more counting and working out-i'm off work today!!

Good lil erm...thing tho!!

4. Posted by me.da (Full Member 96 posts) 11y

Yeh I'm going with 2.

Except that that makes the trolls pretty dim, cos they get 1 cake off you and give it straight back. It also works with 6 or 10 and at least then you're spreading some cake-love to the trolls.

Yes, i AM very bored today.

5. Posted by lil j (Travel Guru 1303 posts) 11y

ok i'm going to work this out but not just right now!!