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# The symbol ∞ represents one of the following functions: addition,

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

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18 Sep 2019, 02:32
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Difficulty:

35% (medium)

Question Stats:

71% (01:07) correct 29% (00:48) wrong based on 24 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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Joined: 29 Jun 2019
Posts: 466
Re: The symbol ∞ represents one of the following functions: addition,  [#permalink]

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18 Sep 2019, 03:08
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
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Joined: 10 Sep 2019
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Re: The symbol ∞ represents one of the following functions: addition,  [#permalink]

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18 Sep 2019, 06:34
Mohammadmo wrote:
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 *
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Joined: 27 May 2012
Posts: 934
The symbol ∞ represents one of the following functions: addition,  [#permalink]

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30 Sep 2019, 11:42
SajjadAhmad wrote:
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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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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