Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Yo man u seem really really smart. i was wondering if u dont mind me

  1. Nov 20, 2003 #1
    yo man u seem really really smart. i was wondering if u dont mind me asking where did u go to school and what did u major in. i love math, its fascinating, and u seem to have a very in depth understanding of it so if u dont mind could u tell me? also i dont have a question. 2+2/2 wahts the answer 2 or 3? there are no parenthesis i know that would change it.
     
  2. jcsd
  3. Nov 20, 2003 #2
    2+2/2 = 2+1 = 3

    Why? Order of operations.

    here's a way to remember...
    Please Excuse My Dear Aunt Sally
    P=Parentheses
    E=Exponents
    M=Multiplication
    D=Division
    A=Addition
    S=Subtraction

    In other words, first solve brackets, then parentheses, then multiplication/division, then addition/subtraction last.


    In the case of "2 + 2/2"...
    First: Division (2/2)
    Second: Addition (2+1)

    Thus, 2+2/2 = 3
     
  4. Nov 20, 2003 #3

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    Actually, "Hals" is my cousin. I'm "Halls"!
     
  5. Nov 20, 2003 #4

    chroot

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    You all look the same to me.

    - Warren
     
  6. Nov 20, 2003 #5
    ah, a typo discovered i have. mb. also i thought that you were supposed to work left to right? isnt that a rule too? maybe im just crazy.
     
    Last edited: Nov 20, 2003
  7. Nov 21, 2003 #6

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    No, you READ left to write (well, those of us of European linguistic bent). You do operations in the defined order as Brum said. As far as you being crazy- I wouldn't presume.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Yo man u seem really really smart. i was wondering if u dont mind me
  1. Is i Really Imaginary? (Replies: 11)

Loading...