Math, asked by LokeshGoregaoker, 3 months ago

without actually adding, find the sum of 1+3+5+7+9+11+13+15+17+19+21

Answers

Answered by sonamsharmanamo

Answer:

121 = 1+3+5+7+9+11+13+15+17+19+21. Thus , 121 is a perfact square. Since, 55 cannot be expressed as the sum of successive old numbers starting from 1.

Step-by-step explanation:

Answered by ItzBeautyBabe

→ The sum of first 11 odd numbers = 11²

ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ= 121.

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without actually adding, find the sum of 1+3+5+7+9+11+13+15+17+19+21​

Answers

without actually adding, find the sum of 1+3+5+7+9+11+13+15+17+19+21