The missing pound?

@a certain sadness wrote:

@mrs_teapot wrote:

@ian52hants wrote:

My favourite one of these is

Mr and Mrs Brown have 7 children -If exactly half of them are girls what sex are the others?

Brings this to the fore as the next one to be solved….. thanks to Ian.

Goes off to think about it…. I hope you know the answer Ian…. :D

i dont understand how you can half the 7 but was thinking they could all be girls

Ha Ha! thats obviously right certain… obvious when you know the answer. Was this answer given before? I didnt see it if it was :D

@a certain sadness wrote:

Im trying to think outside the box mrs t, its difficult when your wallpapering :D

I love wallpapering :D

And now for the extra pound –

There are ten bags, each containing ten weights, all of which look identical. In nine of the bags each weight is 16 ounces, but in one of the bags the weights are actually 17 ounces each. How is it possible, in a single weighing on an accurate weighing scale, to determine which bag contains the 17-ounce weights?

Ian

Ok with all the silence I will give the answer

You take one weight from bag one, two from bag two, thre from bag three etc.

You then weigh all of these together you remove from the bags at once, and the answer is however many ounces you are over the total it should be (I am not working it out) that is the bag that has the 17 ounce weights.

For example if it was bag four you would be four ounces over because you had 4 of the weights that were 1 oz extra.

Ian