VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 3 : Grenville thinks of 7 consecutive numbers. The sum of the smallest three is 33. What is the sum of the largest three? (A) 36, (B) 39, (C) 42, (D) 45, (E) 48.
VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – ANSWER 3 : D. Sum of the smallest 3 consecutive numbers = X + (X + 1) + (X + 2) = 33, X = 10 = smallest number. So the 7 consecutive numbers are 10, 11, 12, 13, 14, 15, 16. Sum of largest 3 = 14 + 15 + 16 = 45.
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