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The symbol R represents one of the following

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The symbol R represents one of the following  [#permalink]

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New post 07 Jun 2014, 07:50
1
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

95% (00:37) correct 5% (00:38) wrong based on 490 sessions

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The symbol R represents one of the following operations:addition, subtraction, multiplication, or division.

What is the value of 5R2 ?

(1) 2R5 = 10
(2) 5R5 = 25

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Re: The symbol R represents one of the following  [#permalink]

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New post 07 Jun 2014, 07:56
The symbol R represents one of the following operations: addition, subtraction, multiplication, or division. What is the value of 5R2 ?

(1) 2R5 = 10. R can only be multiplication (2*5 = 10), thus 5*2 = 10. Sufficient.

(2) 5R5 = 25. The same here: R can only be multiplication (5*5 = 25), thus 5*2 = 10. Sufficient.

Answer: D.

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Hope it helps.
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The symbol R represents one of the following  [#permalink]

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New post 23 Feb 2017, 04:43
Solution:

Given: “R” represents one of the following operations such as; addition, subtraction, multiplication or division.
To find Value of 5R2, which means which operation does “R” holds.

Analysis of statement 1: 2R5 = 10
Let’s plug in the different operations for “R” and let’s see which yields 10 as the answer.
2R5 = 2 + 5 = 7 ≠10
2R5 = 2 - 5 = -3 ≠10
2R5 = 2 × 5 = 10 =10
2R5 = 2 ÷ 5 = 0.4 ≠10
From statement 1 it is clear that “R” hold multiplication operation, therefore we can get the answer for 5R2. Hence statement 1 is sufficient.

Analysis of statement 2: 5R5 = 25
Let’s plug in the different operations for “R” and let’s see which yields 25 as the answer
5R5 = 5 + 5 = 10 ≠25
5R5 = 5 - 5 = 0 ≠25
5R5 = 5 × 5 = 25 = 25
5R5 = 5 ÷ 5 = 1 ≠25
From statement 2 it is clear that “R” hold multiplication operation, therefore we can get the answer for 5R2. Hence statement 2 is sufficient.

The correct answer option is “D”.
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Re: The symbol R represents one of the following  [#permalink]

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New post 10 Jan 2019, 22:59
Don't think much , just replace R with signs and check the options.
Clearly R represents multiplication.

Kudos please
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Re: The symbol R represents one of the following   [#permalink] 10 Jan 2019, 22:59
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