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Question
It is known that Ravi and Akshay secured equal grades in Test 3. So, which of the following statements is definitely true?
Options:
A .  Everyone except Alok and Ravi got A+ grade in Test 5.
B .  Exactly eight students got C grade in Test 2.
C .  Exactly 6 students got less than A grade in Test 3.
D .  None of these.
Answer: Option C
:
C
The average score of the 15 candidates in tests 2 is 2715 = 1.8 or 3015 = 2 or 3315 = 2.2.
Thus, option [3] can be true.
The total score of all the 15 candidates in Test 3, except Ravi, Akshay and Paresh, is 56. Considering all the possibilities of the points scored by these three in Test 5, none of them add up to 19. Thus the average of 5 cannot be achieved.

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