Find the sum by suitable arrangement: $22 + 86 + 97 + 11 + 14 + 78 + 89$ .

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Solution

Given: Find the sum by suitable arrangement: $22 + 86 + 97 + 11 + 14 + 78 + 89$ .
$22 + 86 + 97 + 11 + 14 + 78 + 89 = (22 + 78) + (86 + 14) + (11 + 89) = 100 + 100 + 100 = 300$
Hence, the required solution is $300$

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