Mathematical Puzzle
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There is a building of 100 floors
-If an egg drops from the Nth floor or above it will break.
-If it’s dropped from any floor below, it will not break.
You’re given 2 eggs.
Find NHow many drops you need to make?
What strategy should you adopt to minimize the number egg drops it takes to find the solution?
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- 15 answers
- 2 votes
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Prove that p^2 – 1 is divisible by 24 if p is a prime number greater than 3?
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- 1 answers
- 1 votes
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- 1,618.8K views
- 1 answers
- 0 votes
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- 1,615.8K views
- 1 answers
- 0 votes
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Three people check into a hotel.
They pay £30 to the manager and go to their room.
The manager suddenly remembers that the room rate is £25 and gives £5 to the bellboy to return to the people.
On the way to the room the bellboy reasons that £5 would be difficult to share among three people so he pockets £2 and gives £1 to each person.
Now each person paid £10 and got back £1.
So they paid £9 each, totalling £27. The bellboy has £2, totalling £29.
Where is the missing £1?
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- 1 answers
- 0 votes
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- 1,616.6K views
- 1 answers
- 1 votes
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People are waiting in line to board a 100-seat airplane. Steve is the first person in the line. He gets on the plane but suddenly can’t remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it’s available, otherwise they will choose an open seat at random to sit in.
The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?
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- 10 answers
- 0 votes
