Q: In a class, there are ' z ' students. Out of them ‘x’ are boys. – McqOptions

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1.	Q: In a class, there are ' z ' students. Out of them ‘x’ are boys. What part of the class is composed of girls?
A.	$$1-{x\over z} $$
B.	$${x\over z}-1 $$
C.	$${x\over z} $$
D.	$${z\over x} $$
Answer» B. $${x\over z}-1 $$

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