Math, asked by kowsalyadekkati, 1 month ago

6 Without adding, find the sum. (i) 1+3 + 5 + 7 +9 (ii) 1+3 + 5+7+9+11+13+ 15 + 17 + 19

Answers

Answered by abhisheksuresh5050

0

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Answered by ashimak512

0

Answer:

1)Total consecutive odd numbers = 5

Thus, n = 5

Therefore, sum = n2

= 5 × 5 = 25

2) 1+3+5+7+9+11+13+15+17+19 = 102 = 10×10 =100.

Step-by-step explanation:

hope this helps you

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