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Operations Problem

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Intern
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Joined: 05 Dec 2019
Posts: 2
Operations Problem  [#permalink]

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New post Updated on: 05 Dec 2019, 23:49
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E

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Using the numbers 1, 2, 3, and 4, in that order, only using each number once, one set of parenthesis, and 3 out of the 4 operations (addition, subtraction, multiplication, division) to get 14. Which operation is not needed?

a) Subtraction
b) Addition
c) Multiplication
d) Division
e) The problem is not possible

I went with E because I haven't been able to get 14 using 3 out of the 4 operations with a single set of parenthesis. The problem seems very easy, which makes me think I'm overlooking something simple. Clearly the addition and multiplication need to come from the larger numbers in the set, which makes division give a fraction and subtraction a negative answer. Am I missing something or is this problem really as easy as it appears?

Originally posted by thunc14 on 05 Dec 2019, 23:05.
Last edited by thunc14 on 05 Dec 2019, 23:49, edited 1 time in total.
Senior Manager
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Joined: 16 Feb 2015
Posts: 264
Location: United States
Concentration: Finance, Operations
Schools: INSEAD, ISB
Operations Problem  [#permalink]

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New post 05 Dec 2019, 23:40
thunc14 wrote:
Using the numbers 1, 2, 3, and 4, in that order, only using each number once, one set of parenthesis, and 3 out of the 4 operations (addition, subtraction, multiplication, division), which operation is not needed?

a) Subtraction
b) Addition
c) Multiplication
d) Division
e) The problem is not possible

I went with E because I haven't been able to get 14 using 3 out of the 4 operations with a single set of parentheses. The problem seems very easy, which makes me think I'm overlooking something simple. Clearly the addition and multiplication need to come from the larger numbers in the set, which makes division give a fraction and subtraction a negative answer. Am I missing something or is this problem really as easy as it appears?


You are not missing anything.

Please Provide a source of this question. So that we can find the exact solution.
But with this problem, E is the answer, We have to follow the order of number: i.e. 1,2,3,4.

Also you have missed some part of the question. What is the resultant value you want?
GMAT Club Bot
Operations Problem   [#permalink] 05 Dec 2019, 23:40
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