Fusion 2nd Edition | Page 17

And finally.... OUR SOURCES!
Live Science

RIDDLES!

( Answers)

And finally.... OUR SOURCES!

1) Bill and Claudia were playing doubles together. They beat their opponents 3-2, meaning each of them won 3 sets.
2) William’ s mother is significantly younger than his father. His grandfather( from his mother’ s side) had his mother when he was very young, making his dad older than his grandfather.
3) The dates are in BC- the date moves from 1985 BC to 1980 BC, so Ben gets 5 years older in that time.

This is where got most of our information from:

NASA

National History Museum
4) Each person can be born during any of the 12 months. Let’ s say the first th
12 people are all born in different months. Then, the 13 person cannot be born on their own individual month- they would have to share their birthday month with at least one of the other 12.
Challenge) A more difficult version of Riddle 4. In a room of n people, each person can have from 0 to( n-1) acquaintances inclusive( since you can’ t be your own acquaintance. We can label everyone by the number of acquaintances they have. Then, for n people, there are also n different labels( for 3 people, you can have 0, 1 or 2 acquaintances). For n people, the only way that everyone has a different label is this: one person knows nobody, another knows one... all the way until the last person knows( n-1). However, the person that knows( n-1) would have to be acquaintances with the person who knows nobody, so there cannot be someone who knows nobody, thus at least two people have the same label.

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ACS

Britannica

Live Science

BBC Bitesize

Howstuffworks

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