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

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

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New post 18 Sep 2019, 02:32
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A
B
C
D
E

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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Re: The symbol ∞ represents one of the following functions: addition,  [#permalink]

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New post 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

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Re: The symbol ∞ represents one of the following functions: addition,  [#permalink]

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New post 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

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

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New post 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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