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By inserting parentheses, it is possible to give the expression 2*3 +

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Math Expert
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Joined: 02 Sep 2009
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By inserting parentheses, it is possible to give the expression 2*3 +  [#permalink]

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New post 28 Mar 2019, 23:38
1
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A
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Difficulty:

  35% (medium)

Question Stats:

57% (01:13) correct 43% (01:05) wrong based on 21 sessions

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Director
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Joined: 27 May 2012
Posts: 902
Re: By inserting parentheses, it is possible to give the expression 2*3 +  [#permalink]

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New post 29 Mar 2019, 12:20
Bunuel wrote:
By inserting parentheses, it is possible to give the expression 2*3 + 4*5 several values. How many different values can be obtained?

(A) 2
(B) 3
(C) 4
(D) 5
(E) 6



Below are the various ways I could brute force the parenthesis. Not sure if this is the correct way,But I am getting 4 different values. I guess we cannot manipulate the numbers .

2*3 + 4*5 =26

2(3+4*5)=46


(2*3 + 4)5=50


2*(3 + 4)*5 =70
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Re: By inserting parentheses, it is possible to give the expression 2*3 +   [#permalink] 29 Mar 2019, 12:20
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By inserting parentheses, it is possible to give the expression 2*3 +

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