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1). 212). 273). 22.64). 27.3 |
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Answer» Let the seventh number is X. Sum of NINE numbers = 18 × 9 = 162 X + (X + 5) + (X + 6) = 162 – 42 – (46/3 × 3) = 74 ⇒ 3X + 11 = 74 ⇒ X = 21 ∴ 9th number = 21 + 6 = 27 |
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