Question

The sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25 + 27 + 29 + 31 + 33 + 35 + 37 + 39 *

1 point

39²

21²

20²

19²

​

Answer 1

Answer:

the sum of 1+3+5+7+9+11+.......+37+39 is 400

39*39=1521

21*21=441

20*20=400

19*19=361

Step-by-step explanation:

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Answer 2

Answer:

21²

Step-by-step explanation:

number of odd numbers

devided is 21

Therefore the answer is

21²