find the sum of 100 positive integers
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Answer:
Sum of first 100 positive integers =5050.
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Some of the first 100 positive integers =5050. Now 101 to 200, each term will be 100 more than a certain term in 1 to 100. For example, 101 is 100 more than 1, 102 is again 100 more than 2... And so on till 200 is 100 more than 100... Thus, the Sum of 101 to 200 will be the sum of 1 to 100+100*100=5050+10000=15050.
Sum of all 1 to 200 = 5050+15050=20,100.
2) Average
Average of 1 to 200 is middle of 100 and 101, so 100.50, thus sum = 200*100.50=20,100.
3) Sum = 200∗1+2002200∗1+2002=200*100.50=20,100.
Step-by-step explanation:
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