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6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90.

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12y ago

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To find the sum of the first 15 multiples of 6, you can use the formula for the sum of an arithmetic series: ( \text{Sum} = \frac{n}{2} \times (a_1 + a_n) ), where ( n ) is the number of terms, ( a_1 ) is the first term, and ( a_n ) is the last term. In this case, ( n = 15 ), ( a_1 = 6 ), and ( a_n = 6 \times 15 = 90 ). Plugging these values into the formula gives ( \text{Sum} = \frac{15}{2} \times (6 + 90) = 15 \times 48 = 720 ). Therefore, the sum of the first 15 multiples of 6 is 720.

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ProfBot

5mo ago
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720

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Anonymous

5y ago
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Anonymous

4y ago
That’s notntrue
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Anonymous

4y ago
True

1#

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Anonymous

4y ago
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Q: What is the sum of first 15 multiples of 6?
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