Answer:
The sum of the numbers 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 20 is:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 20 = 120
Now, to find the square of this sum:
Square = 120 * 120 = 14,400
So, the square of the sum of those numbers is 14,400.
last number should be 21 i.e odd, then it fits in the formula
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Answers & Comments
Answer:
The sum of the numbers 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 20 is:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 20 = 120
Now, to find the square of this sum:
Square = 120 * 120 = 14,400
So, the square of the sum of those numbers is 14,400.
Answer:
last number should be 21 i.e odd, then it fits in the formula