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What is the sum of the multiples of (11) from (44) to (297)?

Answer and explanation

Correct answer: (4092)

The direct answer is option A: 4092. These are the multiples of 11 from 44 to 297, so they form an arithmetic progression. Divide the endpoints by 11: 44 = 4 × 11 and 297 = 27 × 11. Thus the sequence is 44, 55, 66, ..., 297, with first term a = 44, common difference d = 11, and last term l = 297. The number of terms is 27 − 4 + 1 = 24. Using the sum formula for an AP, S = n(a + l)/2, we get S = 24(44 + 297)/2 = 12 × 341 = 4092. Option A is correct. Option B, 4212, does not result from the correct AP sum. Option C, 4332, is also an arithmetic error or an incorrect term count. Option D, 4452, likewise does not match the sequence sum. A useful check is 24 terms with average (44 + 297)/2 = 170.5; 24 × 170.5 = 4092. Common mistake: do not count 297 as 27 terms; it is 27 × 11, so the multiplier indices run from 4 through 27.

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