The Weekly Challenge [Updated 1]

Hi all ACMers,

Here we’r gonna start the “Problem Of The Week”

ofcourse most of u know what the problem of the week is

and for those who don’t know it is simply a problem mainly a Brain Teaser problem where u have to turn your mind on :)

… continue reading this entry.

A E F

What two letters come next in this sequence:

A E F H I K L M  -?-  -?-

3D Imagination [Answered]

The Shape ‘B’ is identical to the red one.

The Winners

The First

Rana

The Second

Nessma Ossam

The Third

Proud To Be Muslim

then

  • Aya Magdy
  • sama
  • ManS
  • Ahmed Abd El-Hay
  • EnasMohey
  • sara el_sebaiee
  • rehab
  • marmoor1989

3D Imagination

Which of the four black shapes is identical to the red one? There may be more than one which is exactly the same.

ddd

Can You Guess ? [Answered]

Answer: S

They are the first letters or each of the words of the question.

The Winners

The First

Hassan Ibraheem

The Second

Rana

The Third

marmoor1989

Then

  • EnasMohey
  • TeCNoYoTTa
  • ManS
  • Rock
  • Aya Magdy
  • Ahmed Yousef
  • rehab
  • Ahd
  • Mohamed Ezzeldin

Check All Answers here

Can You Guess ?

Can you guess the next letter in this series? and why?

C Y G T N L I T ….?

Cola ! [Answered]

I think it is a very easy problem though we have not big number of winners

the correct answer is 229
simply , by repeated division by 3

The Winners

The First

5olio

The Second

Sara Ebrahim

The Third

TeCNoYoTTa

Then

  • marmoor1989
  • Rana
  • shohanda

Cola !

You see the following special offer by the convenience store:

” A bottle of Choco Cola for every 3 empty bottles returned “

Now you decide to buy some (say N) bottles of cola from the store. You would like to know how you can get the most cola from them.

The figure below shows the case where N = 8. Method 1 is the standard way: after finishing your 8 bottles of cola, you have 8 empty bottles. Take 6 of them and you get 2 new bottles of cola. Now after drinking them you have 4 empty bottles, so you take 3 of them to get yet another new cola. Finally, you have only 2 bottles in hand, so you cannot get new cola any more. Hence, you have enjoyed 8 + 2 + 1 = 11 bottles of cola.

You can actually do better! In Method 2, you first borrow an empty bottle from your friend (?! Or the storekeeper??), then you can enjoy 8 + 3 + 1 = 12 bottles of cola! Of course, you will have to return your remaining empty bottle back to your friend.

Method1

Method2

what is the maximum number of bottles of cola you can enjoy if you started with 153 bottle?

Note: Drinking too much cola is bad for your health, so… don’t try this at home!! :-)

Police Officers !! [Answered]

Police Officers should be placed at B , G & H

the winners

The First

TeCNoYoTTa

The Second

ManS

The Third

Kholoud

and The Fourth

Aya Magdy

Check All Answers here

Police Officers !!

Back to the Challenge :)

The map below shows the street locations of a city. Position the minimum number of police officers so that any point on any street can be seen by at least one officer.

p

Temporary Postponement

Good luck for all in exams, we will continue our weekly challenge after exams ISA :)

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