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Sum of N Terms of an AP

In a test of ...

Question

In a test of x questions , y( $<$ x) answers are correct. Assuming all questions were answered, the number of incorrect answers are

A

0

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B

1

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C

y - x

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D

x - y

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Solution

The correct option is D
x - y

Total number of questions answered = correct + incorrect

x = y + incorrect answers

$\Rightarrow$ incorrect answers = x - y

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