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First one:Hey guys,
Two questions,
Q: Find the sum of: 1 - 2 + 3 - 4 + 5 -6 + ... - 100
Q: What is the least number of terms required if the sum of 15 + 20 + 25 +... is to exceed 2625?
Thanks in advance!
Let's add 5 + 10 to each side:Q: What is the least number of terms required if the sum of 15 + 20 + 25 +... is to exceed 2625?