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    haha:). here's that q5 explanation: We are...

    haha:).

    here's that q5 explanation:

    We are choosing a pair of 2 papers from the 4 papers, and repeating this over and over until we have selected all of the possible pairs of 2. Because it...
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    That's the million dollar question! Well, I...

    That's the million dollar question!

    Well, I think the first step should always be to "translate" the question into more intuitive and colloquial language. This might seem trivial, but unless it is...
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    1. On any given roll the odds of getting a number...

    1. On any given roll the odds of getting a number greater than 4 is 2/6 = 1/3. (Only 5 and 6 are greater than 4, so this is 2 out of the 6 numbers.)

    This means that the probability of getting a...
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    hey Rain, 1. Useful fact: a right triangle...

    hey Rain,

    1. Useful fact: a right triangle maximizes the area. So if you know 2 sides of a triangle, then you can figure out the maximum possible area by treating the triangle as a right triangle....
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    Hey Kamakshi, I'm glad you like my posts!...

    Hey Kamakshi,

    I'm glad you like my posts! Hopefully they are helpful.

    Your updated answer to question 1 is correct (it's 90).

    For question 2 you actually had the right answer the first...
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    Counting Challenge Problems

    Ok, here are 5 counting problems that definitely require a bit of careful consideration. Definitely feel free to post your responses even if you doubt they're correct. No one is getting graded here...
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    Hi Fahad, Thanks for your nice words. I'm...

    Hi Fahad,

    Thanks for your nice words. I'm happy to do whatever you think will help everyone the most.

    You said that you have some questions already. If you want, send me them in a PM and I'll...
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    Thanks. I didn't exactly understand what he was...

    Thanks. I didn't exactly understand what he was referring to before, but yes it can definitely be computed like this. Hadn't even thought of it.
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    Oh I see what you mean. I misunderstood what you...

    Oh I see what you mean. I misunderstood what you where saying in your earlier post.
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    Hey Fahad, Consider the numbers: 1, 2, 128,...

    Hey Fahad,

    Consider the numbers: 1, 2, 128, 378 (i just picked these randomly)

    The average of these 4 numbers is 127.25. Of the 4 numbers, 1 and 2 are below the mean, 128 and 378 are above the...
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    Great question.Here are a few general guidelines:...

    Great question.Here are a few general guidelines:

    If we say that a set of numbers has mean and standard deviation σ (you can use any symbols, these are just conventions), then:

    1. If some...
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    Hey Fahad, For this question here are my 2...

    Hey Fahad,

    For this question here are my 2 preferred methods for solving it:

    Method 1: The probability of picking Eva is 1/5. Then there are 4 names left and so the probability of picking...
  13. Hey Fahad, the reason I multiply by 24 is because...

    Hey Fahad, the reason I multiply by 24 is because this is the number of times that each of our 5 numbers will appear in the units place, the tens place, hundreds place, etc.

    Maybe this will make...
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    I might not have explained it clearly, but after...

    I might not have explained it clearly, but after round 50 we still are flipping cards, it's just that it works out to be only 1 card each time. Every nth card would be every card corresponding to a...
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    There are 100 cards on a table. Each of the cards...

    There are 100 cards on a table. Each of the cards is blue on one side and red on the other side. At first, all the cards are positioned so that the blue side is facing up.

    Next, you perform these...
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