sum of all odd number between 36 and 120 is
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You can use the exact formula. What is number of odd numbers between 11 and 30?
n=(29−13)/2+1=16/2+1=9
Let's list them out to make sure :13,15,17,19,21,23,25,27,29. There are 9 of them, so that is correct. By the way, your formula was calculated wrong.
n=(28−12)/2+1=16/2+1=8+1=9(12,14,16,18,20,22,24,26,28)
maybe by this method you can solve it
Step-by-step explanation:
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