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Read the following question and decide which of the given statements is/are sufficient. Question: The average marks of X, Y, Z is 180. What is X’s mark? Statements: 1. Y and Z together score 50 marks 2. X and Z together score 60 marks

A

2 alone is sufficient while 1 alone is not sufficient

B

Both 1 and 2 together are sufficient

C

1 alone is sufficient while 2 is not sufficient

D

Either 1 or 2 is sufficient

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