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AS Computing help

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    So there's these two questions that I don' understand :/

    1) What is the greatest decimal integer you can represent with
    a)4 b)8 c)16 bits?

    2)How many different permutations of numbers can you represent with:
    a)4 b)8 c)16 d)20 e) 24 bits?

    It is urgent, any help would be appreciated, thanks in advance
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    (Original post by hamza772000)
    So there's these two questions that I don' understand :/

    1) What is the greatest decimal integer you can represent with
    a)4 b)8 c)16 bits?

    2)How many different permutations of numbers can you represent with:
    a)4 b)8 c)16 d)20 e) 24 bits?

    It is urgent, any help would be appreciated, thanks in advance
    Not so sure on the first one.

    I thought I'd bump the thread by saying a suggestion for no. 2 but you can't take my word for it
    I believe you do each bit number to the power of 2 (because binary is base 2).
    So for 4 bits, you'd have 2^4 permutations (16 variations)

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    (Original post by Matrix123)
    Not so sure on the first one.

    I thought I'd bump the thread by saying a suggestion for no. 2 but you can't take my word for it
    I believe you do each bit number to the power of 2 (because binary is base 2).
    So for 4 bits, you'd have 2^4 permutations (16 variations)

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    Oh, thanks and np so erm for 8 bits it'd be 2^8?
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    (Original post by hamza772000)
    So there's these two questions that I don' understand :/

    1) What is the greatest decimal integer you can represent with
    a)4 b)8 c)16 bits?

    2)How many different permutations of numbers can you represent with:
    a)4 b)8 c)16 d)20 e) 24 bits?

    It is urgent, any help would be appreciated, thanks in advance
    For 1) you can find the answer by the formula ((2^n)-1)

    For 2) its just the formula 2^n
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    (Original post by hamza772000)
    Oh, thanks and np so erm for 8 bits it'd be 2^8?
    :yep:
    Best to wait for someone to confirm it though
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    (Original post by IWMTom)
    For 1) you can find the answer by the formula ((2^n)-1)

    For 2) its just the formula 2^n
    So for the first one for 4 bits it'd be ((2^4)-1)=(16-1)=15?

    Oh, ok yh that confirms it

    Thank you so much!

    (Original post by Matrix123)
    :yep:
    Best to wait for someone to confirm it though
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    Yeah, the person above confirmed it

    Ngl, this is simpler than I thought Thank you Matrix!
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    (Original post by hamza772000)
    So for the first one for 4 bits it'd be ((2^4)-1)=(16-1)=15?

    Oh, ok yh that confirms it

    Thank you so much!

    Yeah, the person above confirmed it

    Ngl, this is simpler than I thought Thank you Matrix!
    Cool

    Haha glad to hear it
    No worries!
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    (Original post by Matrix123)
    Cool

    Haha glad to hear it
    No worries!
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    Right, back to work now! ttyl
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    (Original post by hamza772000)
    Right, back to work now! ttyl
    Haha good! and good luck with it
    Yup
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    (Original post by Matrix123)
    Haha good! and good luck with it
    Yup
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    Oh, yeah Matrix, y'know that prefix sheet of yours helped me a lot, thanks!
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    (Original post by hamza772000)
    Oh, yeah Matrix, y'know that prefix sheet of yours helped me a lot, thanks!
    No worries! I haven't sent the Greek yet, have I? I can send that as well if you want

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    (Original post by Matrix123)
    No worries! I haven't sent the Greek yet, have I? I can send that as well if you want

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    Yeah, I mean if you want, I can take a look, send it whenever ur free
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    (Original post by hamza772000)
    Yeah, I mean if you want, I can take a look, send it whenever ur free
    Of course!
    Spoiler:
    Show
    Greek:
    Name:  1474494853217.jpg
Views: 7
Size:  44.4 KB
    Name:  1474494866546.jpg
Views: 7
Size:  40.6 KB
    Base/Derived units:
    Name:  1474494883416.jpg
Views: 7
Size:  64.0 KB
    Quantities and units:
    Name:  1474494894877.jpg
Views: 6
Size:  50.7 KB
    Name:  1474494906778.jpg
Views: 6
Size:  53.0 KB

    You've probably done some of these before but I thought I'd send it all in one go - that's all the stuff from my summer hwk

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    (Original post by Matrix123)
    Of course!
    Spoiler:
    Show
    Greek:
    Name:  1474494853217.jpg
Views: 7
Size:  44.4 KB
    Name:  1474494866546.jpg
Views: 7
Size:  40.6 KB
    Base/Derived units:
    Name:  1474494883416.jpg
Views: 7
Size:  64.0 KB
    Quantities and units:
    Name:  1474494894877.jpg
Views: 6
Size:  50.7 KB
    Name:  1474494906778.jpg
Views: 6
Size:  53.0 KB

    You've probably done some of these before but I thought I'd send it all in one go - that's all the stuff from my summer hwk
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    Oh, goodness, Matrix! Didn't expect that much, really can't thank you enough :emo: but I can try, THANK YOU SO MUCH! I'll have a look once I'm doing Physics
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    (Original post by hamza772000)
    Oh, goodness, Matrix! Didn't expect that much, really can't thank you enough :emo: but I can try, THANK YOU SO MUCH! I'll have a look once I'm doing Physics
    Haha
    No worries! Well it's only fair that I give you the stuff I've been given - we're doing the same AS anyways :five: Okey dokey
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    (Original post by Matrix123)
    Haha
    No worries! Well it's only fair that I give you the stuff I've been given - we're doing the same AS anyways :five: Okey dokey
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    Yh, we sure are You don't have to though
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    (Original post by hamza772000)
    Yh, we sure are You don't have to though
    :ahee:
    True, but it's better to spread the resources round:awesome:

    Gonna sleep now, goodnight! :hugs:
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    (Original post by Matrix123)
    :ahee:
    True, but it's better to spread the resources round:awesome:

    Gonna sleep now, goodnight! :hugs:
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    Yep, true :yep:

    Goodnight!

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