6÷2(1+2)= ?

Discussion in 'BlackHat Lounge' started by MrSmith, May 1, 2011.

1. MrSmithNewbie

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What answers do you guys get?

9 or 1?

2. bibiriscaJunior Member

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Absolutely 1

Last edited: May 1, 2011
3. oxonbeefBANNEDBANNED

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Order of Operations
Do things in Brackets First. Example:

6 × (5 + 3) = 6 × 8 =
48

6 × (5 + 3) = 30 + 3 =
33
(wrong)
Exponents (Powers, Roots) before Multiply, Divide, Add or Subtract. Example:

5 × 22 = 5 × 4 =
20

5 × 22 = 102 =
100
(wrong)
Multiply or Divide before you Add or Subtract. Example:

2 + 5 × 3 = 2 + 15 =
17

2 + 5 × 3 = 7 × 3 =
21
(wrong)
Otherwise just go left to right. Example:

30 ÷ 5 × 3 = 6 × 3 =
18

30 ÷ 5 × 3 = 30 ÷ 15 =
2
(wrong)
How Do I Remember It All ... ? BODMAS !

B
Brackets first
O
Orders (ie Powers and Square Roots, etc.)
DM
Division and Multiplication (left-to-right)
AS
Addition and Subtraction (left-to-right)

Last edited: May 1, 2011
4. breakpointRegistered Member

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I would think 1

6/2(3)
6/6

5. Pluto \$crillionsRegistered Member

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What? Def 9. I don't understand how you can get 1.

6. MrSmithNewbie

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Here it goes hah

I say 1 too, but hey...Someone will come out with BODMAS rule > * math laws and say 9.

7. calispawnedNewbie

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This is elementary. Plus google will do the dam problem for you if you type it in the search bar. NOOOOOBS

8. breakpointRegistered Member

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yeah this is useless in the real world

9. bibiriscaJunior Member

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parentheses first - 6/2(1+2)
now multiplication 2x3 - 6/2(3)
division - 6/6

And the answer is 1

10. Pluto \$crillionsRegistered Member

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I thought division had the same priority in the order of operations haha, math never really was my thing unless its dollars and cents.

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math101 =1

12. dalcacio2007Newbie

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you have to use order of operations
Parenthesis
Exponents
Multiplication/Division

Therefore
6/2(1+2) = 6/2(3)
Now we're left with multiplications and divisions which have the same priority, so we solve from left to right
6/2 = 3
3 * 3 = 9

13. dalcacio2007Newbie

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Nope, after solving the parenthesis all of them have the same priority therefore it ends up
6/2*3
then we solve from left to right, because division and multiplication have the same priority, therefore it is 9

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15. MrSmithNewbie

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Say you had a / b(c)

How did you suddenly get a/b * c when it should have been 'a / bc' ?

16. paulukRegistered Member

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6÷2(1+2)=?

6÷2=3 1+2=3 3x3=9

That's the way i worked it out so its 9

17. pilgrimJunior Member

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I've looked at this very carefully for some time now, and I think you'll find the correct answer is I don't give a fuck

• Thanks x 1

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The answer is surely 1.
First of all you need to open the bracket. Basic BODMASS rule applies here.
6/2(1+2)
6/2+4
6/6

Remember 2(1+2) is one part and therefore (1+2) needs to get multiplied by 2 instead of adding 1+2 and then multiplying it with the remainder of 6/2

HIDAYAKUMULLAH

19. zone69Junior Member

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You need to distribute the 2 first.

6÷2(1+2)
=6÷(2+4)
=6÷6
=1

Look at the question as 6 OVER 2(1+2) which is what it really is which makes the answer more clear.

Last edited: May 1, 2011
20. thevilJunior Member

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`http://www.google.com/search?q=6%C3%B72(1%2B2)`