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what is the sum of 20 odd number

What is the sum of odd 20 number

Note by Devki Nandan
3 years, 2 months ago

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how can we sum odd numbers to give the sum 30? the odd numbers are (1,3,5,7,9,11,13,15). hint: we can use the digits more than 1 time also we have to calculate the sum in 5 intervals. · 2 years, 3 months ago

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