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Senior RC Moderator V
Joined: 02 Nov 2016
Posts: 4136
GPA: 3.39
The symbol ∞ represents one of the following functions: addition,  [#permalink]

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Difficulty:   35% (medium)

Question Stats: 73% (01:09) correct 27% (00:48) wrong based on 22 sessions

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The symbol $$∞$$ represents one of the following functions: addition, subtraction, multiplication, or division. What is the value of $$2∞2$$?

(1) $$1∞1=1$$

(2) $$2∞2 = 4(1∞1)$$

Source: McGraw-Hill's GMAT (1-36)

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Senior Manager  G
Joined: 29 Jun 2019
Posts: 425
Re: The symbol ∞ represents one of the following functions: addition,  [#permalink]

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Statement1;1×1=1 or 1÷1=1
Not sufficient.
Statement2;2×2=4×(1) or 2+2=4×(1)
The sign would be"×" or"+".
Not sufficient
Option E

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Intern  Joined: 10 Sep 2019
Posts: 1
Re: The symbol ∞ represents one of the following functions: addition,  [#permalink]

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Statement1;1×1=1 or 1÷1=1
Not sufficient.
Statement2;2×2=4×(1) or 2+2=4×(1)
The sign would be"×" or"+".
Not sufficient
Option E

Posted from my mobile device

I think you forgot to consider both options.

If A gives you a possibility of * or / and B gives you a possibility of + or * then combined, they give you only one possibility of *
Director  V
Joined: 27 May 2012
Posts: 903
The symbol ∞ represents one of the following functions: addition,  [#permalink]

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The symbol $$∞$$ represents one of the following functions: addition, subtraction, multiplication, or division. What is the value of $$2∞2$$?

(1) $$1∞1=1$$

(2) $$2∞2 = 4(1∞1)$$

Source: McGraw-Hill's GMAT (1-36)

(1) $$1∞1=1$$, ∞ could be Multiplication(*) or Division (/) INSUFF
(2) $$2∞2 = 4(1∞1),$$∞ could be Multiplication(*) or Subtraction(-) INSUFF

1+2
∞ can be Multiplication (*) only SUFF
Ans- C

Hi Mohammadmo, SShareef please note statement (2) CANNOT be true for +(addition)
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- Stne The symbol ∞ represents one of the following functions: addition,   [#permalink] 30 Sep 2019, 11:42
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The symbol ∞ represents one of the following functions: addition,

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