Question

without adding find the sum of the following number
1+3+5+7+9=
1+3+5+7+9+11+13+15+17=
1+3+5+7+9+11+13+15+17+19+21+23+25=
​

Answer 1

Answer:

1+3+5+7+9=25

1+3+5+7+9+11+13+15+17=81

1+3+5+7+9+11+13+15+17+19+21+23+25=169

Step-by-step explanation:

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