Question

Find the sum of all integers between 75 and 450 which are multiples of 9

Answer 1

81,90,108,117,126,135,144,153,162,171, 180,189,198,207,216,225,234,243,252, 261,270,279,288,297,306,315,324,333, 342,351,360,369,378,387,396,405,414, 423,432,441,450.

Answer 2

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