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Number Systems - Set 8
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NUST Entrance Test
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Mathematics
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Number Systems
Set 8
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Mashaal Masha
Sep 26, 2022
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Table of Contents
Choose the correct options for the following questions.
If $a\:\epsilon\:R$, then the additive inverse of a is
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Difficulty: Hard
A:
$\frac{1}{a}$
B:
$-\frac{1}{a}$
C:
a
D:
-a
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The identity element with respect to subtraction is
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Difficulty: Hard
A:
0
B:
-1
C:
0 and 1
D:
None
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