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Manipal Entrance Test 2013 Math Paper

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Question : 78

Total: 80

a, b, c are prime numbers, x is an even number, y is an odd number. Which of the following is/are never true?
I. a + x = b
II. b + y = c
III. ab = c
IV. a + b = c

I and II
II and III
Only III
III and IV

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