BrainBashers - Random Puzzles

Puzzle 13

At the equator the radius of the earth is 6,378 km, so its circumference is almost exactly 40,000 km.

Imagine we had a long rope which went around the equator, this would of course be 40,000 km long.

If we now placed 1 metre sticks vertically all the way around and lay the rope on top of these sticks (so the rope would be 1m higher all the way around) how much extra rope would we require?

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Puzzle 14

Imagine a bottle recycling skip, empty other than one lonely bottle.

Every hour, on the hour, people come and put bottles into the skip.

The first hour, at noon, one person came and put a bottle in.

One hour later, two people each placed a bottle into the skip.

An hour later, four people each placed a bottle into the skip.

This doubling of people continued until 11pm, when the skip was finally full.

When was the skip exactly half full?

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Puzzle 15

Which is larger, the number of seconds in a day or …

… the number of hours in 10 years?

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Puzzle 16

For being well-behaved at the garden fayre, four children were each given two sweets.

Jesse had an orange sweet.
One child who had a red sweet also had a blue one.
No child had two sweets of the same colour.
A child who had a green sweet also had a red one.
Jamie didn't have a red sweet, and Jo had a green one.
Jordan didn't have an orange one, and Jesse had no blue sweets.
Knowing that there were two sweets of each colour, can you tell the colours of the sweets each child had?

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