Without adding, find the sum 1 + 3 + 5 + 7 + ___ + 23.
Answers
Answered by
1
Step-by-step explanation:
So by equation (1) we can write, 1+3+5+7+9+11+13+15+17+19+21+23 = 122 = 12×12 =144.
Answered by
0
Answer:
21
Step-by-step explanation:
1+3+5+7+21+23 because the number are odd and 23 is also ordered
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