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
Answers
Answered by
0
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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Answered by
0
Answer:
21²
Step-by-step explanation:
number of odd numbers
devided is 21
Therefore the answer is
21²
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