Question 224304
What is the sum of the first 5000 odd numbers?


Step 1.  So we need to add the first 5000 odd numbers from 1-9999.


Step 2.  We note that 1+9999=10,0000 and 3+9997=10,000 5+9995=10,000 and so on.


Step 3.  So we will have 2500 pairs of these numbers adding to 10,000.


Step 4.  Then 2500*10000=25000000.


Step 5.  ANSWER:  The sum of the first 5000 odd numbers is 25 million.


I hope the above steps were helpful. 


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And good luck in your studies!


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Dr J


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