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The operation denoted by the symbol ♦ is defined for all real numbers

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The operation denoted by the symbol ♦ is defined for all real numbers  [#permalink]

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New post 09 Jan 2019, 00:34
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A
B
C
D
E

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  15% (low)

Question Stats:

100% (00:44) correct 0% (00:00) wrong based on 19 sessions

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Re: The operation denoted by the symbol ♦ is defined for all real numbers  [#permalink]

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New post 09 Jan 2019, 00:46
Bunuel wrote:
The operation denoted by the symbol \(\blacklozenge\) is defined for all real numbers p and r as follows. \(p \blacklozenge r = pr - p+ r\) What is the value of \((-4) \blacklozenge 5\) ?


(A) \(- 9\)

(B) \(- 11\)

(C) \(- 19\)

(D) \(19\)

(E) \(21\)


IMO B

Substitute the values and apply BODMAS

-20 + 4 + 5
-11
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Re: The operation denoted by the symbol ♦ is defined for all real numbers  [#permalink]

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New post 09 Jan 2019, 02:27
Bunuel wrote:
The operation denoted by the symbol \(\blacklozenge\) is defined for all real numbers p and r as follows. \(p \blacklozenge r = pr - p+ r\) What is the value of \((-4) \blacklozenge 5\) ?


(A) \(- 9\)

(B) \(- 11\)

(C) \(- 19\)

(D) \(19\)

(E) \(21\)


substitute and solve as per given function
-4*5 +4 +5
= -11
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Re: The operation denoted by the symbol ♦ is defined for all real numbers   [#permalink] 09 Jan 2019, 02:27
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The operation denoted by the symbol ♦ is defined for all real numbers

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