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What is the sum of the first 100 positive multiples of 4?

What is the sum of the first 100 positive multiples of 4?
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What is the sum of the first 100 positive multiples of 4?

User Marc Pursals
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2 Answers

7 votes
This would be a series: 5 + 10 + 15 + 20 +...+ 500
there are n terms → n = 100
the nth term is 500

User Wdphd
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3 votes
sum = (n/2)(a+b) in which n=number of multiples a = value of first multiple b = value of last multiple So : (100/2) X (4+400) 50 X 404 20200 The final answer is 20200. You got it?
User William Juan
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